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Commit 50150fd6 authored by Mattias Jonsson's avatar Mattias Jonsson
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Bug#53806: Wrong estimates for range query in partitioned MyISAM table 

Bug#46754: 'rows' field doesn't reflect partition pruning

The EXPLAIN's result in 'rows' field
was evaluated to number of rows when the table was opened
(not from the table cache) and only the partitions left
after pruning was updated with its correct number
of rows.

The evaluation of the 'rows' field was using handler::records()
which is a potentially expensive call, and ignores the partitioning
pruning.

The fix was to use the handlers stats.records after updating it
with ::info(HA_STATUS_VARIABLE) instead.
parent 6973c354
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mysql-test/r/partition_pruning.result
View file @ 50150fd6
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
# #
# Bug#53806: Wrong estimates for range query in partitioned MyISAM table
# Bug#46754: 'rows' field doesn't reflect partition pruning
#
CREATE TABLE t1 (a INT PRIMARY KEY)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (1),
PARTITION p1 VALUES LESS THAN (2),
PARTITION p2 VALUES LESS THAN (3),
PARTITION p3 VALUES LESS THAN (4),
PARTITION p4 VALUES LESS THAN (5),
PARTITION p5 VALUES LESS THAN (6),
PARTITION max VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (-1),(0),(1),(2),(3),(4),(5),(6),(7),(8);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
# # # # # # # # # 3 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 7;
id select_type table partitions type possible_keys key key_len ref rows Extra
# # # # # # # # # 9 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
# # # # # # # # # 3 #
DROP TABLE t1;
#
# Bug#49742: Partition Pruning not working correctly for RANGE # Bug#49742: Partition Pruning not working correctly for RANGE
# #
CREATE TABLE t1 (a INT PRIMARY KEY) CREATE TABLE t1 (a INT PRIMARY KEY)
...@@ -89,7 +113,7 @@ a ...@@ -89,7 +113,7 @@ a
1 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p0,p1 index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a <= 2; SELECT * FROM t1 WHERE a <= 2;
a a
-1 -1
...@@ -98,7 +122,7 @@ a ...@@ -98,7 +122,7 @@ a
2 2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a <= 3; SELECT * FROM t1 WHERE a <= 3;
a a
-1 -1
...@@ -108,7 +132,7 @@ a ...@@ -108,7 +132,7 @@ a
3 3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a <= 4; SELECT * FROM t1 WHERE a <= 4;
a a
-1 -1
...@@ -119,7 +143,7 @@ a ...@@ -119,7 +143,7 @@ a
4 4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a <= 5; SELECT * FROM t1 WHERE a <= 5;
a a
-1 -1
...@@ -131,7 +155,7 @@ a ...@@ -131,7 +155,7 @@ a
5 5
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 5; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3,p4,p5 index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p0,p1,p2,p3,p4,p5 index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a <= 6; SELECT * FROM t1 WHERE a <= 6;
a a
-1 -1
...@@ -213,7 +237,7 @@ a ...@@ -213,7 +237,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p1,p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 8 Using where; Using index
SELECT * FROM t1 WHERE a >= 2; SELECT * FROM t1 WHERE a >= 2;
a a
2 2
...@@ -225,7 +249,7 @@ a ...@@ -225,7 +249,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a >= 3; SELECT * FROM t1 WHERE a >= 3;
a a
3 3
...@@ -236,7 +260,7 @@ a ...@@ -236,7 +260,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a >= 4; SELECT * FROM t1 WHERE a >= 4;
a a
4 4
...@@ -246,7 +270,7 @@ a ...@@ -246,7 +270,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p4,p5,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a >= 5; SELECT * FROM t1 WHERE a >= 5;
a a
5 5
...@@ -255,7 +279,7 @@ a ...@@ -255,7 +279,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 5; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p5,max index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a >= 6; SELECT * FROM t1 WHERE a >= 6;
a a
6 6
...@@ -263,14 +287,14 @@ a ...@@ -263,14 +287,14 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 6; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 6;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a >= 7; SELECT * FROM t1 WHERE a >= 7;
a a
7 7
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 7; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 7;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 1; SELECT * FROM t1 WHERE a > 1;
a a
2 2
...@@ -282,7 +306,7 @@ a ...@@ -282,7 +306,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a > 2; SELECT * FROM t1 WHERE a > 2;
a a
3 3
...@@ -293,7 +317,7 @@ a ...@@ -293,7 +317,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a > 3; SELECT * FROM t1 WHERE a > 3;
a a
4 4
...@@ -303,7 +327,7 @@ a ...@@ -303,7 +327,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4,p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p4,p5,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a > 4; SELECT * FROM t1 WHERE a > 4;
a a
5 5
...@@ -312,7 +336,7 @@ a ...@@ -312,7 +336,7 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 4; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p5,max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 p5,max index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a > 5; SELECT * FROM t1 WHERE a > 5;
a a
6 6
...@@ -320,20 +344,20 @@ a ...@@ -320,20 +344,20 @@ a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 5; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 6; SELECT * FROM t1 WHERE a > 6;
a a
7 7
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 6; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 6;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 7; SELECT * FROM t1 WHERE a > 7;
a a
8 8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 7; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 7;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 10 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
DROP TABLE t1; DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY) CREATE TABLE t1 (a INT PRIMARY KEY)
PARTITION BY RANGE (a) ( PARTITION BY RANGE (a) (
...@@ -408,7 +432,7 @@ a ...@@ -408,7 +432,7 @@ a
1 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p0,p1 index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a <= 2; SELECT * FROM t1 WHERE a <= 2;
a a
-1 -1
...@@ -417,7 +441,7 @@ a ...@@ -417,7 +441,7 @@ a
2 2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a <= 3; SELECT * FROM t1 WHERE a <= 3;
a a
-1 -1
...@@ -427,7 +451,7 @@ a ...@@ -427,7 +451,7 @@ a
3 3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a <= 4; SELECT * FROM t1 WHERE a <= 4;
a a
-1 -1
...@@ -438,7 +462,7 @@ a ...@@ -438,7 +462,7 @@ a
4 4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a <= 5; SELECT * FROM t1 WHERE a <= 5;
a a
-1 -1
...@@ -511,7 +535,7 @@ a ...@@ -511,7 +535,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p1,p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a >= 2; SELECT * FROM t1 WHERE a >= 2;
a a
2 2
...@@ -522,7 +546,7 @@ a ...@@ -522,7 +546,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a >= 3; SELECT * FROM t1 WHERE a >= 3;
a a
3 3
...@@ -532,7 +556,7 @@ a ...@@ -532,7 +556,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p3,p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p3,p4,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a >= 4; SELECT * FROM t1 WHERE a >= 4;
a a
4 4
...@@ -541,7 +565,7 @@ a ...@@ -541,7 +565,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p4,max index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a >= 5; SELECT * FROM t1 WHERE a >= 5;
a a
5 5
...@@ -549,14 +573,14 @@ a ...@@ -549,14 +573,14 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 5; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a >= 6; SELECT * FROM t1 WHERE a >= 6;
a a
6 6
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 6; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 6;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 1; SELECT * FROM t1 WHERE a > 1;
a a
2 2
...@@ -567,7 +591,7 @@ a ...@@ -567,7 +591,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a > 2; SELECT * FROM t1 WHERE a > 2;
a a
3 3
...@@ -577,7 +601,7 @@ a ...@@ -577,7 +601,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p3,p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p3,p4,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a > 3; SELECT * FROM t1 WHERE a > 3;
a a
4 4
...@@ -586,7 +610,7 @@ a ...@@ -586,7 +610,7 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4,max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 p4,max index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a > 4; SELECT * FROM t1 WHERE a > 4;
a a
5 5
...@@ -594,20 +618,20 @@ a ...@@ -594,20 +618,20 @@ a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 4; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 5; SELECT * FROM t1 WHERE a > 5;
a a
6 6
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 5; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 6; SELECT * FROM t1 WHERE a > 6;
a a
7 7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 6; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 6;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 9 Using where; Using index 1 SIMPLE t1 max index PRIMARY PRIMARY 4 NULL 3 Using where; Using index
DROP TABLE t1; DROP TABLE t1;
# test of RANGE and index # test of RANGE and index
CREATE TABLE t1 (a DATE, KEY(a)) CREATE TABLE t1 (a DATE, KEY(a))
...@@ -757,10 +781,10 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -757,10 +781,10 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 5 Using where; Using index 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p2001-01-01 index a a 4 NULL 7 Using where; Using index 1 SIMPLE t1 pNULL,p2001-01-01 index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p2001-01-01 index a a 4 NULL 7 Using where; Using index 1 SIMPLE t1 pNULL,p2001-01-01 index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index 1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index
...@@ -880,34 +904,34 @@ a ...@@ -880,34 +904,34 @@ a
1001-01-01 1001-01-01
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1 1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where
# Disabling warnings for the invalid date # Disabling warnings for the invalid date
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -917,25 +941,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -917,25 +941,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
DROP TABLE t1; DROP TABLE t1;
# test of LIST and index # test of LIST and index
CREATE TABLE t1 (a DATE, KEY(a)) CREATE TABLE t1 (a DATE, KEY(a))
...@@ -1086,10 +1110,10 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1086,10 +1110,10 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 7 Using where; Using index 1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 7 Using where; Using index 1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index 1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index
...@@ -1101,7 +1125,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1101,7 +1125,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p1001-01-01 index a a 4 NULL 7 Using where; Using index 1 SIMPLE t1 pNULL,p1001-01-01 index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index 1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
...@@ -1209,62 +1233,62 @@ a ...@@ -1209,62 +1233,62 @@ a
1001-01-01 1001-01-01
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1 1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where
# Disabling warnings for the invalid date # Disabling warnings for the invalid date
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 pNULL,p1001-01-01 ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where
DROP TABLE t1; DROP TABLE t1;
# Test with DATETIME column NOT NULL # Test with DATETIME column NOT NULL
CREATE TABLE t1 ( CREATE TABLE t1 (
...@@ -1289,25 +1313,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1289,25 +1313,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090402 index NULL PRIMARY 12 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1315,99 +1339,99 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1315,99 +1339,99 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090402 index NULL PRIMARY 12 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 12 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 12 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 12 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 12 NULL 6 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090402 index NULL PRIMARY 12 NULL 13 Using where; Using index 1 SIMPLE t1 p20090402 index NULL PRIMARY 12 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1440,21 +1464,21 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1440,21 +1464,21 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1462,79 +1486,79 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1462,79 +1486,79 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1542,19 +1566,19 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1542,19 +1566,19 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1562,11 +1586,11 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1562,11 +1586,11 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 12 Using where; Using index 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
DROP TABLE t1; DROP TABLE t1;
# Test with DATETIME column NULL # Test with DATETIME column NULL
CREATE TABLE t1 ( CREATE TABLE t1 (
...@@ -1590,25 +1614,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1590,25 +1614,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 8 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1616,99 +1640,99 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1616,99 +1640,99 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 13 Using where 1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1740,21 +1764,21 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1740,21 +1764,21 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 7 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1762,79 +1786,79 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1762,79 +1786,79 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1842,19 +1866,19 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1842,19 +1866,19 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
...@@ -1862,11 +1886,11 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1862,11 +1886,11 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME); WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
DROP TABLE t1; DROP TABLE t1;
# For better code coverage of the patch # For better code coverage of the patch
CREATE TABLE t1 ( CREATE TABLE t1 (
...@@ -1930,7 +1954,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1930,7 +1954,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t2 where a=1 and b=1; explain partitions select * from t2 where a=1 and b=1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where
create table t3 ( create table t3 (
a int a int
) )
...@@ -1988,25 +2012,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -1988,25 +2012,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions select * from t5 explain partitions select * from t5
where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3); where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t5 p0_p0sp0,p0_p0sp1 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t5 p0_p0sp0,p0_p0sp1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t5 where (a=10 and b=2) or (a=10 and b=3) explain partitions select * from t5 where (a=10 and b=2) or (a=10 and b=3)
or (a=10 and b = 4); or (a=10 and b = 4);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp0,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp0,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where
explain partitions select * from t5 where (c=1 and d=1); explain partitions select * from t5 where (c=1 and d=1);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t5 p0_p0sp0,p1_p1sp0 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t5 p0_p0sp0,p1_p1sp0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t5 where (c=2 and d=1); explain partitions select * from t5 where (c=2 and d=1);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t5 p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t5 p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or
(c=2 and d=1); (c=2 and d=1);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or
(b=2 and c=2 and d=1); (b=2 and c=2 and d=1);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 3 Using where
create table t6 (a int not null) partition by LIST(a) ( create table t6 (a int not null) partition by LIST(a) (
partition p1 values in (1), partition p1 values in (1),
partition p3 values in (3), partition p3 values in (3),
...@@ -2044,7 +2068,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2044,7 +2068,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1 1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1
explain partitions select * from t6 where a >= 3 and a <= 8; explain partitions select * from t6 where a >= 3 and a <= 8;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 3 and a < 5; explain partitions select * from t6 where a > 3 and a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
...@@ -2086,7 +2110,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2086,7 +2110,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1 1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1
explain partitions select * from t6 where a >= 3 and a <= 8; explain partitions select * from t6 where a >= 3 and a <= 8;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 3 and a < 5; explain partitions select * from t6 where a > 3 and a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
...@@ -2325,7 +2349,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2325,7 +2349,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions explain partitions
select * from t1 X, t1 Y where X.a = Y.a and (X.a=1 or X.a=2); select * from t1 X, t1 Y where X.a = Y.a and (X.a=1 or X.a=2);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE X p1,p2 ALL a NULL NULL NULL 4 Using where 1 SIMPLE X p1,p2 ALL a NULL NULL NULL 2 Using where
1 SIMPLE Y p1,p2 ref a a 4 test.X.a 2 1 SIMPLE Y p1,p2 ref a a 4 test.X.a 2
drop table t1; drop table t1;
create table t1 (a int) partition by hash(a) partitions 20; create table t1 (a int) partition by hash(a) partitions 20;
...@@ -2338,7 +2362,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2338,7 +2362,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a > 1 and a <= 3; explain partitions select * from t1 where a > 1 and a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a >= 1 and a <= 3; explain partitions select * from t1 where a >= 1 and a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2,p3 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t1 p1,p2,p3 ALL NULL NULL NULL NULL 3 Using where
...@@ -2428,22 +2452,22 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2428,22 +2452,22 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010
explain partitions select * from t2 where a < 801 and a > 200; explain partitions select * from t2 where a < 801 and a > 200;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p1,p2,p3,p4 ALL NULL NULL NULL NULL 800 Using where
explain partitions select * from t2 where a < 801 and a > 800; explain partitions select * from t2 where a < 801 and a > 800;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 200 Using where
explain partitions select * from t2 where a > 600; explain partitions select * from t2 where a > 600;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where a > 600 and b = 1; explain partitions select * from t2 where a > 600 and b = 1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where a > 600 and b = 4; explain partitions select * from t2 where a > 600 and b = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where a > 600 and b = 5; explain partitions select * from t2 where a > 600 and b = 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where b = 5; explain partitions select * from t2 where b = 5;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 Using where 1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 Using where
...@@ -2498,19 +2522,19 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2498,19 +2522,19 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 910 1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 910
explain partitions select * from t2 where a = 101; explain partitions select * from t2 where a = 101;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 910 Using where 1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 110 Using where
explain partitions select * from t2 where a = 550; explain partitions select * from t2 where a = 550;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 910 Using where 1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 200 Using where
explain partitions select * from t2 where a = 833; explain partitions select * from t2 where a = 833;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 910 Using where 1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 200 Using where
explain partitions select * from t2 where (a = 100 OR a = 900); explain partitions select * from t2 where (a = 100 OR a = 900);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p4 ALL NULL NULL NULL NULL 910 Using where 1 SIMPLE t2 p0,p4 ALL NULL NULL NULL NULL 310 Using where
explain partitions select * from t2 where (a > 100 AND a < 600); explain partitions select * from t2 where (a > 100 AND a < 600);
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2 ALL NULL NULL NULL NULL 910 Using where 1 SIMPLE t2 p0,p1,p2 ALL NULL NULL NULL NULL 510 Using where
explain partitions select * from t2 where b = 4; explain partitions select * from t2 where b = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 Using where 1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 Using where
...@@ -2796,17 +2820,17 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2796,17 +2820,17 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions select * from t1 explain partitions select * from t1
where a >= 18446744073709551000-1 and a <= 18446744073709551000+1; where a >= 18446744073709551000-1 and a <= 18446744073709551000+1;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p3,p4 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p3,p4 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t1 explain partitions select * from t1
where a between 18446744073709551001 and 18446744073709551002; where a between 18446744073709551001 and 18446744073709551002;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a = 18446744073709551000; explain partitions select * from t1 where a = 18446744073709551000;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a = 18446744073709551613; explain partitions select * from t1 where a = 18446744073709551613;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a = 18446744073709551614; explain partitions select * from t1 where a = 18446744073709551614;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
...@@ -2833,10 +2857,10 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2833,10 +2857,10 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a=0xFE; explain partitions select * from t1 where a=0xFE;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t2 where a=0xFE; explain partitions select * from t2 where a=0xFE;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a > 0xFE AND a <= 0xFF; explain partitions select * from t1 where a > 0xFE AND a <= 0xFF;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
...@@ -2845,22 +2869,22 @@ id select_type table partitions type possible_keys key key_len ref rows Extra ...@@ -2845,22 +2869,22 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t1 where a >= 0xFE AND a <= 0xFF; explain partitions select * from t1 where a >= 0xFE AND a <= 0xFF;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t2 where a >= 0xFE AND a <= 0xFF; explain partitions select * from t2 where a >= 0xFE AND a <= 0xFF;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a < 64 AND a >= 63; explain partitions select * from t1 where a < 64 AND a >= 63;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t2 where a < 64 AND a >= 63; explain partitions select * from t2 where a < 64 AND a >= 63;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 4 Using where 1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a <= 64 AND a >= 63; explain partitions select * from t1 where a <= 64 AND a >= 63;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 4 Using where
explain partitions select * from t2 where a <= 64 AND a >= 63; explain partitions select * from t2 where a <= 64 AND a >= 63;
id select_type table partitions type possible_keys key key_len ref rows Extra id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 4 Using where
drop table t1; drop table t1;
drop table t2; drop table t2;
create table t1(a bigint unsigned not null) partition by range(a+0) ( create table t1(a bigint unsigned not null) partition by range(a+0) (
......
mysql-test/t/partition_pruning.test
View file @ 50150fd6
...@@ -8,6 +8,30 @@ ...@@ -8,6 +8,30 @@
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
--enable_warnings --enable_warnings
--echo #
--echo # Bug#53806: Wrong estimates for range query in partitioned MyISAM table
--echo # Bug#46754: 'rows' field doesn't reflect partition pruning
--echo #
CREATE TABLE t1 (a INT PRIMARY KEY)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (1),
PARTITION p1 VALUES LESS THAN (2),
PARTITION p2 VALUES LESS THAN (3),
PARTITION p3 VALUES LESS THAN (4),
PARTITION p4 VALUES LESS THAN (5),
PARTITION p5 VALUES LESS THAN (6),
PARTITION max VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (-1),(0),(1),(2),(3),(4),(5),(6),(7),(8);
--replace_column 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 11 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
--replace_column 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 11 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 7;
--replace_column 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 11 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
DROP TABLE t1;
--echo # --echo #
--echo # Bug#49742: Partition Pruning not working correctly for RANGE --echo # Bug#49742: Partition Pruning not working correctly for RANGE
--echo # --echo #
......
sql/sql_select.cc
View file @ 50150fd6
...@@ -16640,7 +16640,15 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order, ...@@ -16640,7 +16640,15 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
if (tab->select && tab->select->quick) if (tab->select && tab->select->quick)
examined_rows= tab->select->quick->records; examined_rows= tab->select->quick->records;
else if (tab->type == JT_NEXT || tab->type == JT_ALL) else if (tab->type == JT_NEXT || tab->type == JT_ALL)
examined_rows= tab->limit ? tab->limit : tab->table->file->records(); {
if (tab->limit)
examined_rows= tab->limit;
else
{
tab->table->file->info(HA_STATUS_VARIABLE);
examined_rows= tab->table->file->stats.records;
}
}
else else
examined_rows=(ha_rows)join->best_positions[i].records_read; examined_rows=(ha_rows)join->best_positions[i].records_read;
......
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