NULL test t1 x1 NULL 1 NULL RANGE NULL a NULL 5 0 0 0 # 0 0 # # NULL NULL default 0 default
NULL test t1 x2 NULL 2 NULL RANGE NULL a NULL 10 0 0 0 # 0 0 # # NULL NULL default 0 default
NULL test t1 x3 NULL 3 NULL RANGE NULL a NULL 20 0 0 0 # 0 0 # # NULL NULL default 0 default
select * from t1 order by a;
a b c
1 1 1
6 1 1
10 1 1
15 1 1
select * from t1 where a=1 order by a;
a b c
1 1 1
select * from t1 where a=15 and b=1 order by a;
a b c
15 1 1
select * from t1 where a=21 and b=1 order by a;
a b c
select * from t1 where a=21 order by a;
a b c
select * from t1 where a in (1,6,10,21) order by a;
a b c
1 1 1
6 1 1
10 1 1
select * from t1 where b=1 and a in (1,6,10,21) order by a;
a b c
1 1 1
6 1 1
10 1 1
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(b),
unique (a))
engine = ndb
partition by range (b)
partitions 3
(partition x1 values less than (5),
partition x2 values less than (10),
partition x3 values less than (20));
INSERT into t1 values (1, 1, 1);
INSERT into t1 values (2, 6, 1);
INSERT into t1 values (3, 10, 1);
INSERT into t1 values (4, 15, 1);
select * from t1 order by a;
a b c
1 1 1
2 6 1
3 10 1
4 15 1
UPDATE t1 set a = 5 WHERE b = 15;
select * from t1 order by a;
a b c
1 1 1
2 6 1
3 10 1
5 15 1
UPDATE t1 set a = 6 WHERE a = 5;
select * from t1 order by a;
a b c
1 1 1
2 6 1
3 10 1
6 15 1
select * from t1 where b=1 order by b;
a b c
1 1 1
select * from t1 where b=15 and a=1 order by b;
a b c
select * from t1 where b=21 and a=1 order by b;
a b c
select * from t1 where b=21 order by b;
a b c
select * from t1 where b in (1,6,10,21) order by b;
a b c
1 1 1
2 6 1
3 10 1
select * from t1 where a in (1,2,5,6) order by b;
a b c
1 1 1
2 6 1
6 15 1
select * from t1 where a=1 and b in (1,6,10,21) order by b;
a b c
1 1 1
DELETE from t1 WHERE b = 6;
DELETE from t1 WHERE a = 6;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` int(11) NOT NULL,
`c` int(11) NOT NULL,
PRIMARY KEY (`b`),
UNIQUE KEY `a` (`a`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY RANGE (b) (PARTITION x1 VALUES LESS THAN (5) ENGINE = ndbcluster, PARTITION x2 VALUES LESS THAN (10) ENGINE = ndbcluster, PARTITION x3 VALUES LESS THAN (20) ENGINE = ndbcluster)
drop table t1;
CREATE TABLE t1
(id MEDIUMINT NOT NULL,
b1 BIT(8),
vc VARCHAR(255),
bc CHAR(255),
d DECIMAL(10,4) DEFAULT 0,
f FLOAT DEFAULT 0,
total BIGINT UNSIGNED,
y YEAR,
t DATE) ENGINE=NDB
PARTITION BY RANGE (YEAR(t))
(PARTITION p0 VALUES LESS THAN (1901),
PARTITION p1 VALUES LESS THAN (1946),
PARTITION p2 VALUES LESS THAN (1966),
PARTITION p3 VALUES LESS THAN (1986),
PARTITION p4 VALUES LESS THAN (2005),
PARTITION p5 VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
SELECT * FROM t1;
id b1 vc bc d f total y t
0 NULL NULL NULL NULL NULL NULL NULL NULL
ALTER TABLE t1 ENGINE=MYISAM;
SELECT * FROM t1;
id b1 vc bc d f total y t
0 NULL NULL NULL NULL NULL NULL NULL NULL
DROP TABLE t1;
CREATE LOGFILE GROUP lg1
ADD UNDOFILE 'undofile.dat'
INITIAL_SIZE 16M
UNDO_BUFFER_SIZE=1M
ENGINE=NDB;
CREATE TABLESPACE ts1
ADD DATAFILE 'datafile.dat'
USE LOGFILE GROUP lg1
INITIAL_SIZE 12M
ENGINE NDB;
CREATE TABLE test.t1 (
a1 INT,
a2 TEXT NOT NULL,
a3 BIT NOT NULL,
a4 DECIMAL(8,3),
a5 INT NOT NULL,
a6 INT,
PRIMARY KEY(a1))
TABLESPACE ts1 STORAGE DISK ENGINE=NDB
PARTITION BY LIST (a1)
(PARTITION p0 VALUES IN (1,2,3,4,5),
PARTITION p1 VALUES IN (6,7,8,9, 10),
PARTITION p2 VALUES IN (11, 12, 13, 14, 15));
ALTER TABLE test.t1 DROP COLUMN a6;
ALTER TABLE test.t1 ADD COLUMN a6 VARCHAR(255);
SELECT COUNT(*) FROM test.t1;
COUNT(*)
15
ALTER TABLE test.t1 DROP COLUMN a4;
SELECT COUNT(*) FROM test.t1;
COUNT(*)
15
DROP TABLE t1;
CREATE TABLE test.t1 (
a1 INT,
a2 TEXT NOT NULL,
a3 BIT NOT NULL,
a4 DECIMAL(8,3),
a5 INT NOT NULL,
a6 VARCHAR(255),
PRIMARY KEY(a1))
TABLESPACE ts1 STORAGE DISK ENGINE=NDB
PARTITION BY HASH(a1)
PARTITIONS 4;
SELECT COUNT(*) FROM test.t1;
COUNT(*)
15
ALTER TABLE test.t1 DROP COLUMN a4;
SELECT COUNT(*) FROM test.t1;
COUNT(*)
15
DROP TABLE t1;
ALTER TABLESPACE ts1
DROP DATAFILE 'datafile.dat'
ENGINE=NDB;
DROP TABLESPACE ts1 ENGINE=NDB;
DROP LOGFILE GROUP lg1 ENGINE=NDB;
CREATE TABLE t1
(id MEDIUMINT NOT NULL,
b1 BIT(8),
vc VARCHAR(255),
bc CHAR(255),
d DECIMAL(10,4) DEFAULT 0,
f FLOAT DEFAULT 0,
total BIGINT UNSIGNED,
y YEAR,
t DATE) ENGINE=NDB
PARTITION BY LIST(id)
(PARTITION p0 VALUES IN (2, 4),
PARTITION p1 VALUES IN (42, 142));
INSERT INTO t1 VALUES (2,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
SELECT * FROM t1;
id b1 vc bc d f total y t
2 NULL NULL NULL NULL NULL NULL NULL NULL
ALTER TABLE t1 ADD PARTITION
(PARTITION p2 VALUES IN (412));
SELECT * FROM t1;
id b1 vc bc d f total y t
2 NULL NULL NULL NULL NULL NULL NULL NULL
DROP TABLE t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null)
partition by list(a)
partitions 2
(partition x123 values in (1,5,6),
partition x234 values in (4,7,8));
INSERT into t1 VALUES (5,1,1);
select * from t1;
a b c
5 1 1
UPDATE t1 SET a=8 WHERE a=5 AND b=1;
select * from t1;
a b c
8 1 1
drop table t1;
CREATE TABLE t1 ( f1 INTEGER, f2 char(20)) engine=ndb
@@ -1480,7 +1480,7 @@ Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<e
...
@@ -1480,7 +1480,7 @@ Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<e
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;
id select_type table type possible_keys key key_len ref rows Extra
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 1 Using index; Using where
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index; Using where
Warnings:
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < _latin1'a2'))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < _latin1'a2'))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`