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Commit b94e8e4b authored by Varun Gupta's avatar Varun Gupta
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MDEV-23867: insert... select crash in compute_window_func 

There are 2 issues here:

Issue #1: memory allocation.
An IO_CACHE that uses encryption uses a larger buffer (it needs space for the encrypted data,
decrypted data, IO_CACHE_CRYPT struct to describe encryption parameters etc).

Issue #2: IO_CACHE::seek_not_done
When IO_CACHE objects are cloned, they still share the file descriptor.
This means, operation on one IO_CACHE may change the file read position
which will confuse other IO_CACHEs using it.

The fix of these issues would be:
Allocate the buffer to also include the extra size needed for encryption.
Perform seek again after one IO_CACHE reads the file.
parent 5a9df155
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include/my_sys.h
View file @ b94e8e4b
......@@ -476,18 +476,19 @@ typedef struct st_io_cache /* Used when cacheing files */
partial.
*/
int seek_not_done,error;
/* buffer_length is memory size allocated for buffer or write_buffer */
/* length of the buffer used for storing un-encrypted data */
size_t buffer_length;
/* read_length is the same as buffer_length except when we use async io */
size_t read_length;
myf myflags; /* Flags used to my_read/my_write */
/*
alloced_buffer is 1 if the buffer was allocated by init_io_cache() and
0 if it was supplied by the user.
alloced_buffer is set to the size of the buffer allocated for the IO_CACHE.
Includes the overhead(storing key to ecnrypt and decrypt) for encryption.
Set to 0 if nothing is allocated.
Currently READ_NET is the only one that will use a buffer allocated
somewhere else
*/
my_bool alloced_buffer;
size_t alloced_buffer;
#ifdef HAVE_AIOWAIT
/*
As inidicated by ifdef, this is for async I/O, which is not currently
......
mysql-test/suite/encryption/r/tempfiles_encrypted.result 0 → 100644
View file @ b94e8e4b
#
# Tests when the temporary files are encrypted
#
select @@encrypt_tmp_files;
@@encrypt_tmp_files
1
drop table if exists t1,t2;
drop view if exists v1;
# ########################################################################
# # Parser tests
# ########################################################################
#
# Check what happens when one attempts to use window function without OVER clause
create table t1 (a int, b int);
insert into t1 values (1,1),(2,2);
select row_number() from t1;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'from t1' at line 1
select rank() from t1;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'from t1' at line 1
# Attempt to use window function in the WHERE clause
select * from t1 where 1=rank() over (order by a);
ERROR HY000: Window function is allowed only in SELECT list and ORDER BY clause
select * from t1 where 1>row_number() over (partition by b order by a);
ERROR HY000: Window function is allowed only in SELECT list and ORDER BY clause
drop table t1;
# ########################################################################
# # Functionality tests
# ########################################################################
#
# Check if ROW_NUMBER() works in basic cases
create table t1(a int, b int, x char(32));
insert into t1 values (2, 10, 'xx');
insert into t1 values (2, 10, 'zz');
insert into t1 values (2, 20, 'yy');
insert into t1 values (3, 10, 'xxx');
insert into t1 values (3, 20, 'vvv');
select a, row_number() over (partition by a order by b) from t1;
a row_number() over (partition by a order by b)
2 1
2 2
2 3
3 1
3 2
select a, b, x, row_number() over (partition by a order by x) from t1;
a b x row_number() over (partition by a order by x)
2 10 xx 1
2 20 yy 2
2 10 zz 3
3 20 vvv 1
3 10 xxx 2
drop table t1;
create table t1 (pk int primary key, a int, b int);
insert into t1 values
(1, 10, 22),
(2, 11, 21),
(3, 12, 20),
(4, 13, 19),
(5, 14, 18);
select
pk, a, b,
row_number() over (order by a),
row_number() over (order by b)
from t1
order by b;
pk a b row_number() over (order by a) row_number() over (order by b)
5 14 18 5 1
4 13 19 4 2
3 12 20 3 3
2 11 21 2 4
1 10 22 1 5
drop table t1;
#
# Try RANK() function
#
create table t2 (
pk int primary key,
a int
);
insert into t2 values
( 1 , 0),
( 2 , 0),
( 3 , 1),
( 4 , 1),
( 8 , 2),
( 5 , 2),
( 6 , 2),
( 7 , 2),
( 9 , 4),
(10 , 4);
select pk, a, rank() over (order by a) from t2;
pk a rank() over (order by a)
1 0 1
10 4 9
2 0 1
3 1 3
4 1 3
5 2 5
6 2 5
7 2 5
8 2 5
9 4 9
select pk, a, rank() over (order by a desc) from t2;
pk a rank() over (order by a desc)
1 0 9
10 4 1
2 0 9
3 1 7
4 1 7
5 2 3
6 2 3
7 2 3
8 2 3
9 4 1
drop table t2;
#
# Try Aggregates as window functions. With frames.
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (pk int, c int);
insert into t1 select a+1,1 from t0;
update t1 set c=2 where pk not in (1,2,3,4);
select * from t1;
pk c
1 1
2 1
3 1
4 1
5 2
6 2
7 2
8 2
9 2
10 2
select
pk, c,
count(*) over (partition by c order by pk
rows between 2 preceding and 2 following) as CNT
from t1;
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
select
pk, c,
count(*) over (partition by c order by pk
rows between 1 preceding and 2 following) as CNT
from t1;
pk c CNT
1 1 3
2 1 4
3 1 3
4 1 2
5 2 3
6 2 4
7 2 4
8 2 4
9 2 3
10 2 2
select
pk, c,
count(*) over (partition by c order by pk
rows between 2 preceding and current row) as CNT
from t1;
pk c CNT
1 1 1
2 1 2
3 1 3
4 1 3
5 2 1
6 2 2
7 2 3
8 2 3
9 2 3
10 2 3
select
pk,c,
count(*) over (partition by c order by pk rows
between 1 following and 2 following) as CNT
from t1;
pk c CNT
1 1 2
2 1 2
3 1 1
4 1 0
5 2 2
6 2 2
7 2 2
8 2 2
9 2 1
10 2 0
select
pk,c,
count(*) over (partition by c order by pk rows
between 2 preceding and 1 preceding) as CNT
from t1;
pk c CNT
1 1 0
2 1 1
3 1 2
4 1 2
5 2 0
6 2 1
7 2 2
8 2 2
9 2 2
10 2 2
select
pk, c,
count(*) over (partition by c order by pk
rows between current row and 1 following) as CNT
from t1;
pk c CNT
1 1 2
2 1 2
3 1 2
4 1 1
5 2 2
6 2 2
7 2 2
8 2 2
9 2 2
10 2 1
# Check ORDER BY DESC
select
pk, c,
count(*) over (partition by c order by pk desc
rows between 2 preceding and 2 following) as CNT
from t1;
pk c CNT
4 1 3
3 1 4
2 1 4
1 1 3
10 2 3
9 2 4
8 2 5
7 2 5
6 2 4
5 2 3
drop table t0,t1;
#
# Resolution of window names
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (pk int, c int);
insert into t1 select a+1,1 from t0;
update t1 set c=2 where pk not in (1,2,3,4);
select * from t1;
pk c
1 1
2 1
3 1
4 1
5 2
6 2
7 2
8 2
9 2
10 2
select
pk, c,
count(*) over w1 as CNT
from t1
window w1 as (partition by c order by pk
rows between 2 preceding and 2 following);
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
select
pk, c,
count(*) over (w1 rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c order by pk);
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
select
pk, c,
count(*) over (w1 order by pk rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c);
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
select
pk, c,
count(*) over (w2 rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c), w2 as (w1 order by pk);
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
select
pk, c,
count(*) over w3 as CNT
from t1
window
w1 as (partition by c),
w2 as (w1 order by pk),
w3 as (w2 rows between 2 preceding and 2 following);
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
select
pk, c,
count(*) over w as CNT
from t1
window w1 as (partition by c order by pk
rows between 2 preceding and 2 following);
ERROR HY000: Window specification with name 'w' is not defined
select
pk, c,
count(*) over (w2 rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c), w1 as (order by pk);
ERROR HY000: Multiple window specifications with the same name 'w1'
select
pk, c,
count(*) over (w2 rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c), w2 as (w partition by c order by pk);
ERROR HY000: Window specification with name 'w' is not defined
select
pk, c,
count(*) over (w2 rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c), w2 as (w1 partition by c order by pk);
ERROR HY000: Window specification referencing another one 'w1' cannot contain partition list
select
pk, c,
count(*) over (w2 rows between 2 preceding and 2 following) as CNT
from t1
window w1 as (partition by c order by pk), w2 as (w1 order by pk);
ERROR HY000: Referenced window specification 'w1' already contains order list
select
pk, c,
count(*) over w3 as CNT
from t1
window
w1 as (partition by c),
w2 as (w1 order by pk rows between 3 preceding and 2 following),
w3 as (w2 rows between 2 preceding and 2 following);
ERROR HY000: Referenced window specification 'w2' cannot contain window frame
select
pk, c,
count(*) over w1 as CNT
from t1
window w1 as (partition by c order by pk
rows between unbounded following and 2 following);
ERROR HY000: Unacceptable combination of window frame bound specifications
select
pk, c,
count(*) over (w1 rows between 2 preceding and unbounded preceding) as CNT
from t1
window w1 as (partition by c order by pk);
ERROR HY000: Unacceptable combination of window frame bound specifications
select
pk, c,
count(*) over (w1 order by pk rows between current row and 2 preceding) as CNT
from t1
window w1 as (partition by c);
ERROR HY000: Unacceptable combination of window frame bound specifications
select
pk, c,
count(*) over (w2 rows between 2 following and current row) as CNT
from t1
window w1 as (partition by c), w2 as (w1 order by pk);
ERROR HY000: Unacceptable combination of window frame bound specifications
select
pk, c
from t1 where rank() over w1 > 2
window w1 as (partition by c order by pk);
ERROR HY000: Window function is allowed only in SELECT list and ORDER BY clause
select
c, max(pk) as m
from t1
group by c + rank() over w1
window w1 as (order by m);
ERROR HY000: Window function is allowed only in SELECT list and ORDER BY clause
select
c, max(pk) as m, rank() over w1 as r
from t1
group by c+r
window w1 as (order by m);
ERROR HY000: Window function is allowed only in SELECT list and ORDER BY clause
select
c, max(pk) as m, rank() over w1 as r
from t1
group by c having c+r > 3
window w1 as (order by m);
ERROR HY000: Window function is allowed only in SELECT list and ORDER BY clause
select
c, max(pk) as m, rank() over w1 as r,
rank() over (partition by r+1 order by m)
from t1
group by c
window w1 as (order by m);
ERROR HY000: Window function is not allowed in window specification
select
c, max(pk) as m, rank() over w1 as r,
rank() over (partition by m order by r)
from t1
group by c
window w1 as (order by m);
ERROR HY000: Window function is not allowed in window specification
select
c, max(pk) as m, rank() over w1 as r, dense_rank() over w2 as dr
from t1
group by c
window w1 as (order by m), w2 as (partition by r order by m);
ERROR HY000: Window function is not allowed in window specification
select
pk, c,
row_number() over (partition by c order by pk
range between unbounded preceding and current row) as r
from t1;
ERROR HY000: Window frame is not allowed with 'row_number'
select
pk, c,
rank() over w1 as r
from t1
window w1 as (partition by c order by pk
rows between 2 preceding and 2 following);
ERROR HY000: Window frame is not allowed with 'rank'
select
pk, c,
dense_rank() over (partition by c order by pk
rows between 1 preceding and 1 following) as r
from t1;
ERROR HY000: Window frame is not allowed with 'dense_rank'
select
pk, c,
rank() over w1 as r
from t1
window w1 as (partition by c);
ERROR HY000: No order list in window specification for 'rank'
select
pk, c,
dense_rank() over (partition by c) as r
from t1;
ERROR HY000: No order list in window specification for 'dense_rank'
drop table t0,t1;
#
# MDEV-9634: Window function produces incorrect value
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (part_id int, pk int, a int);
insert into t2 select
if(a<5, 0, 1), a, if(a<5, NULL, 1) from t0;
select * from t2;
part_id pk a
0 0 NULL
0 1 NULL
0 2 NULL
0 3 NULL
0 4 NULL
1 5 1
1 6 1
1 7 1
1 8 1
1 9 1
select
part_id, pk, a,
count(a) over (partition by part_id order by pk
rows between 1 preceding and 1 following) as CNT
from t2;
part_id pk a CNT
0 0 NULL 0
0 1 NULL 0
0 2 NULL 0
0 3 NULL 0
0 4 NULL 0
1 5 1 2
1 6 1 3
1 7 1 3
1 8 1 3
1 9 1 2
drop table t0, t2;
#
# RANGE-type bounds
#
create table t3 (
pk int,
val int
);
insert into t3 values
(0, 1),
(1, 1),
(2, 1),
(3, 2),
(4, 2),
(5, 2),
(6, 2);
select
val,
count(val) over (order by val
range between current row and
current row)
as CNT
from t3;
val CNT
1 3
1 3
1 3
2 4
2 4
2 4
2 4
insert into t3 values
(7, 3),
(8, 3);
select
val,
count(val) over (order by val
range between current row and
current row)
as CNT
from t3;
val CNT
1 3
1 3
1 3
2 4
2 4
2 4
2 4
3 2
3 2
drop table t3;
# Now, check with PARTITION BY
create table t4 (
part_id int,
pk int,
val int
);
insert into t4 values
(1234, 100, 1),
(1234, 101, 1),
(1234, 102, 1),
(1234, 103, 2),
(1234, 104, 2),
(1234, 105, 2),
(1234, 106, 2),
(1234, 107, 3),
(1234, 108, 3),
(5678, 200, 1),
(5678, 201, 1),
(5678, 202, 1),
(5678, 203, 2),
(5678, 204, 2),
(5678, 205, 2),
(5678, 206, 2),
(5678, 207, 3),
(5678, 208, 3);
select
part_id,
val,
count(val) over (partition by part_id
order by val
range between current row and
current row)
as CNT
from t4;
part_id val CNT
1234 1 3
1234 1 3
1234 1 3
1234 2 4
1234 2 4
1234 2 4
1234 2 4
1234 3 2
1234 3 2
5678 1 3
5678 1 3
5678 1 3
5678 2 4
5678 2 4
5678 2 4
5678 2 4
5678 3 2
5678 3 2
#
# Try RANGE UNBOUNDED PRECEDING | FOLLOWING
#
select
part_id,
val,
count(val) over (partition by part_id
order by val
range between unbounded preceding and
current row)
as CNT
from t4;
part_id val CNT
1234 1 3
1234 1 3
1234 1 3
1234 2 7
1234 2 7
1234 2 7
1234 2 7
1234 3 9
1234 3 9
5678 1 3
5678 1 3
5678 1 3
5678 2 7
5678 2 7
5678 2 7
5678 2 7
5678 3 9
5678 3 9
select
part_id,
val,
count(val) over (partition by part_id
order by val
range between current row and
unbounded following)
as CNT
from t4;
part_id val CNT
1234 1 9
1234 1 9
1234 1 9
1234 2 6
1234 2 6
1234 2 6
1234 2 6
1234 3 2
1234 3 2
5678 1 9
5678 1 9
5678 1 9
5678 2 6
5678 2 6
5678 2 6
5678 2 6
5678 3 2
5678 3 2
select
part_id,
val,
count(val) over (partition by part_id
order by val
range between unbounded preceding and
unbounded following)
as CNT
from t4;
part_id val CNT
1234 1 9
1234 1 9
1234 1 9
1234 2 9
1234 2 9
1234 2 9
1234 2 9
1234 3 9
1234 3 9
5678 1 9
5678 1 9
5678 1 9
5678 2 9
5678 2 9
5678 2 9
5678 2 9
5678 3 9
5678 3 9
drop table t4;
#
# MDEV-9695: Wrong window frame when using RANGE BETWEEN N FOLLOWING AND PRECEDING
#
create table t1 (pk int, a int, b int);
insert into t1 values
( 1 , 0, 1),
( 2 , 0, 2),
( 3 , 1, 4),
( 4 , 1, 8),
( 5 , 2, 32),
( 6 , 2, 64),
( 7 , 2, 128),
( 8 , 2, 16);
select pk, a, b,
bit_or(b) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING) as bit_or
from t1;
pk a b bit_or
1 0 1 3
2 0 2 3
3 1 4 12
4 1 8 12
5 2 32 96
6 2 64 224
7 2 128 208
8 2 16 144
# Extra ROWS n PRECEDING tests
select pk, a, b,
bit_or(b) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 1 PRECEDING) as bit_or
from t1;
pk a b bit_or
1 0 1 0
2 0 2 1
3 1 4 0
4 1 8 4
5 2 32 0
6 2 64 32
7 2 128 64
8 2 16 128
drop table t1;
create table t2 (
pk int,
a int,
b int
);
insert into t2 values
( 1, 0, 1),
( 2, 0, 2),
( 3, 0, 4),
( 4, 0, 8),
( 5, 1, 16),
( 6, 1, 32),
( 7, 1, 64),
( 8, 1, 128),
( 9, 2, 256),
(10, 2, 512),
(11, 2, 1024),
(12, 2, 2048);
select pk, a, b,
bit_or(b) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 1 PRECEDING) as bit_or
from t2;
pk a b bit_or
1 0 1 0
2 0 2 1
3 0 4 2
4 0 8 4
5 1 16 0
6 1 32 16
7 1 64 32
8 1 128 64
9 2 256 0
10 2 512 256
11 2 1024 512
12 2 2048 1024
select pk, a, b,
bit_or(b) over (partition by a order by pk ROWS BETWEEN 2 PRECEDING AND 2 PRECEDING) as bit_or
from t2;
pk a b bit_or
1 0 1 0
2 0 2 0
3 0 4 1
4 0 8 2
5 1 16 0
6 1 32 0
7 1 64 16
8 1 128 32
9 2 256 0
10 2 512 0
11 2 1024 256
12 2 2048 512
select pk, a, b,
bit_or(b) over (partition by a order by pk ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING) as bit_or
from t2;
pk a b bit_or
1 0 1 0
2 0 2 1
3 0 4 3
4 0 8 6
5 1 16 0
6 1 32 16
7 1 64 48
8 1 128 96
9 2 256 0
10 2 512 256
11 2 1024 768
12 2 2048 1536
# Check CURRENT ROW
select pk, a, b,
bit_or(b) over (partition by a order by pk ROWS BETWEEN CURRENT ROW AND CURRENT ROW) as bit_or
from t2;
pk a b bit_or
1 0 1 1
2 0 2 2
3 0 4 4
4 0 8 8
5 1 16 16
6 1 32 32
7 1 64 64
8 1 128 128
9 2 256 256
10 2 512 512
11 2 1024 1024
12 2 2048 2048
drop table t2;
#
# Try RANGE PRECEDING|FOLLWING n
#
create table t1 (
part_id int,
pk int,
a int
);
insert into t1 values
(10, 1, 1),
(10, 2, 2),
(10, 3, 4),
(10, 4, 8),
(10, 5,26),
(10, 6,27),
(10, 7,40),
(10, 8,71),
(10, 9,72);
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 FOLLOWING) as cnt
from t1;
pk a cnt
1 1 4
2 2 4
3 4 4
4 8 4
5 26 6
6 27 6
7 40 7
8 71 9
9 72 9
select
pk, a,
count(a) over (ORDER BY a DESC
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 FOLLOWING) as cnt
from t1;
pk a cnt
9 72 2
8 71 2
7 40 3
6 27 5
5 26 5
4 8 9
3 4 9
2 2 9
1 1 9
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 1 FOLLOWING) as cnt
from t1;
pk a cnt
1 1 2
2 2 2
3 4 3
4 8 4
5 26 6
6 27 6
7 40 7
8 71 9
9 72 9
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 PRECEDING) as cnt
from t1;
pk a cnt
1 1 0
2 2 0
3 4 0
4 8 0
5 26 4
6 27 4
7 40 6
8 71 7
9 72 7
select
pk, a,
count(a) over (ORDER BY a DESC
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 PRECEDING) as cnt
from t1;
pk a cnt
9 72 0
8 71 0
7 40 2
6 27 3
5 26 3
4 8 5
3 4 5
2 2 5
1 1 5
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 1 PRECEDING) as cnt
from t1;
pk a cnt
1 1 0
2 2 1
3 4 2
4 8 3
5 26 4
6 27 5
7 40 6
8 71 7
9 72 8
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN 1 PRECEDING
AND CURRENT ROW) as cnt
from t1;
pk a cnt
1 1 1
2 2 2
3 4 1
4 8 1
5 26 1
6 27 2
7 40 1
8 71 1
9 72 2
select
pk, a,
count(a) over (ORDER BY a DESC
RANGE BETWEEN 1 PRECEDING
AND CURRENT ROW) as cnt
from t1;
pk a cnt
9 72 1
8 71 2
7 40 1
6 27 1
5 26 2
4 8 1
3 4 1
2 2 1
1 1 2
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN 1 FOLLOWING
AND 3 FOLLOWING) as cnt
from t1;
pk a cnt
1 1 2
2 2 1
3 4 0
4 8 0
5 26 1
6 27 0
7 40 0
8 71 1
9 72 0
# Try CURRENT ROW with[out] DESC
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN CURRENT ROW
AND 1 FOLLOWING) as cnt
from t1;
pk a cnt
1 1 2
2 2 1
3 4 1
4 8 1
5 26 2
6 27 1
7 40 1
8 71 2
9 72 1
select
pk, a,
count(a) over (order by a desc
range between current row
and 1 following) as cnt
from t1;
pk a cnt
9 72 2
8 71 1
7 40 1
6 27 2
5 26 1
4 8 1
3 4 1
2 2 2
1 1 1
insert into t1 select 22, pk, a from t1;
select
part_id, pk, a,
count(a) over (PARTITION BY part_id
ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 FOLLOWING) as cnt
from t1;
part_id pk a cnt
10 1 1 4
10 2 2 4
10 3 4 4
10 4 8 4
10 5 26 6
10 6 27 6
10 7 40 7
10 8 71 9
10 9 72 9
22 1 1 4
22 2 2 4
22 3 4 4
22 4 8 4
22 5 26 6
22 6 27 6
22 7 40 7
22 8 71 9
22 9 72 9
select
pk, a,
count(a) over (PARTITION BY part_id
ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 1 PRECEDING) as cnt
from t1;
pk a cnt
1 1 0
2 2 1
3 4 2
4 8 3
5 26 4
6 27 5
7 40 6
8 71 7
9 72 8
1 1 0
2 2 1
3 4 2
4 8 3
5 26 4
6 27 5
7 40 6
8 71 7
9 72 8
drop table t1;
# Try a RANGE frame over non-integer datatype:
create table t1 (
col1 int,
a decimal(5,3)
);
insert into t1 values (1, 0.45);
insert into t1 values (1, 0.5);
insert into t1 values (1, 0.55);
insert into t1 values (1, 1.21);
insert into t1 values (1, 1.22);
insert into t1 values (1, 3.33);
select
a,
count(col1) over (order by a
range between 0.1 preceding
and 0.1 following)
from t1;
a count(col1) over (order by a
range between 0.1 preceding
and 0.1 following)
0.450 3
0.500 3
0.550 3
1.210 2
1.220 2
3.330 1
drop table t1;
#
# RANGE-type frames and NULL values
#
create table t1 (
pk int,
a int,
b int
);
insert into t1 values (1, NULL,1);
insert into t1 values (2, NULL,1);
insert into t1 values (3, NULL,1);
insert into t1 values (4, 10 ,1);
insert into t1 values (5, 11 ,1);
insert into t1 values (6, 12 ,1);
insert into t1 values (7, 13 ,1);
insert into t1 values (8, 14 ,1);
select
pk, a,
count(b) over (order by a
range between 2 preceding
and 2 following) as CNT
from t1
order by a, pk;
pk a CNT
1 NULL 3
2 NULL 3
3 NULL 3
4 10 3
5 11 4
6 12 5
7 13 4
8 14 3
drop table t1;
#
# Try ranges that have bound1 > bound2. The standard actually allows them
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (pk int, c int);
insert into t1 select a+1,1 from t0;
update t1 set c=2 where pk not in (1,2,3,4);
select * from t1;
pk c
1 1
2 1
3 1
4 1
5 2
6 2
7 2
8 2
9 2
10 2
select
pk, c,
count(*) over (partition by c
order by pk
rows between 1 preceding
and 2 preceding)
as cnt
from t1;
pk c cnt
1 1 0
2 1 0
3 1 0
4 1 0
5 2 0
6 2 0
7 2 0
8 2 0
9 2 0
10 2 0
select
pk, c,
sum(c) over (partition by c
order by pk
rows between 1 preceding
and 2 preceding)
as sum
from t1;
pk c sum
1 1 NULL
2 1 NULL
3 1 NULL
4 1 NULL
5 2 NULL
6 2 NULL
7 2 NULL
8 2 NULL
9 2 NULL
10 2 NULL
select
pk, c,
sum(c) over (partition by c
order by pk
rows between 2 following
and 1 following)
as sum
from t1;
pk c sum
1 1 NULL
2 1 NULL
3 1 NULL
4 1 NULL
5 2 NULL
6 2 NULL
7 2 NULL
8 2 NULL
9 2 NULL
10 2 NULL
select
pk, c,
count(*) over (partition by c
order by pk
range between 1 preceding
and 2 preceding)
as cnt
from t1;
pk c cnt
1 1 0
2 1 0
3 1 0
4 1 0
5 2 0
6 2 0
7 2 0
8 2 0
9 2 0
10 2 0
drop table t0, t1;
#
# Error checking for frame bounds
#
create table t1 (a int, b int, c varchar(32));
insert into t1 values (1,1,'foo');
insert into t1 values (2,2,'bar');
select
count(*) over (order by a,b
range between unbounded preceding and current row)
from t1;
ERROR HY000: RANGE-type frame requires ORDER BY clause with single sort key
select
count(*) over (order by c
range between unbounded preceding and current row)
from t1;
ERROR HY000: Numeric datatype is required for RANGE-type frame
select
count(*) over (order by a
range between 'abcd' preceding and current row)
from t1;
ERROR HY000: Numeric datatype is required for RANGE-type frame
select
count(*) over (order by a
range between current row and 'foo' following)
from t1;
ERROR HY000: Numeric datatype is required for RANGE-type frame
# Try range frame with invalid bounds
select
count(*) over (order by a
rows between 0.5 preceding and current row)
from t1;
ERROR HY000: Integer is required for ROWS-type frame
select
count(*) over (order by a
rows between current row and 3.14 following)
from t1;
ERROR HY000: Integer is required for ROWS-type frame
#
# EXCLUDE clause is parsed but not supported
#
select
count(*) over (order by a
rows between 1 preceding and 1 following
exclude current row)
from t1;
ERROR HY000: Frame exclusion is not supported yet
select
count(*) over (order by a
range between 1 preceding and 1 following
exclude ties)
from t1;
ERROR HY000: Frame exclusion is not supported yet
select
count(*) over (order by a
range between 1 preceding and 1 following
exclude group)
from t1;
ERROR HY000: Frame exclusion is not supported yet
select
count(*) over (order by a
rows between 1 preceding and 1 following
exclude no others)
from t1;
count(*) over (order by a
rows between 1 preceding and 1 following
exclude no others)
2
2
drop table t1;
#
# Window function in grouping query
#
create table t1 (
username varchar(32),
amount int
);
insert into t1 values
('user1',1),
('user1',5),
('user1',3),
('user2',10),
('user2',20),
('user2',30);
select
username,
sum(amount) as s,
rank() over (order by s desc)
from t1
group by username;
username s rank() over (order by s desc)
user1 9 2
user2 60 1
drop table t1;
#
# mdev-9719: Window function in prepared statement
#
create table t1(a int, b int, x char(32));
insert into t1 values (2, 10, 'xx');
insert into t1 values (2, 10, 'zz');
insert into t1 values (2, 20, 'yy');
insert into t1 values (3, 10, 'xxx');
insert into t1 values (3, 20, 'vvv');
prepare stmt from 'select a, row_number() over (partition by a order by b) from t1';
execute stmt;
a row_number() over (partition by a order by b)
2 1
2 2
2 3
3 1
3 2
drop table t1;
#
# mdev-9754: Window name resolution in prepared statement
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (pk int, c int);
insert into t1 select a+1,1 from t0;
update t1 set c=2 where pk not in (1,2,3,4);
select * from t1;
pk c
1 1
2 1
3 1
4 1
5 2
6 2
7 2
8 2
9 2
10 2
prepare stmt from
'select
pk, c,
count(*) over w1 as CNT
from t1
window w1 as (partition by c order by pk
rows between 2 preceding and 2 following)';
execute stmt;
pk c CNT
1 1 3
2 1 4
3 1 4
4 1 3
5 2 3
6 2 4
7 2 5
8 2 5
9 2 4
10 2 3
drop table t0,t1;
#
# EXPLAIN FORMAT=JSON support for window functions
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
explain format=json select rank() over (order by a) from t0;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t0.a"
}
},
"temporary_table": {
"table": {
"table_name": "t0",
"access_type": "ALL",
"rows": 10,
"filtered": 100
}
}
}
}
}
create table t1 (a int, b int, c int);
insert into t1 select a,a,a from t0;
explain format=json
select
a,
rank() over (order by sum(b))
from t1
group by a;
EXPLAIN
{
"query_block": {
"select_id": 1,
"filesort": {
"sort_key": "t1.a",
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "sum(t1.b)"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 10,
"filtered": 100
}
}
}
}
}
}
explain format=json
select
a,
rank() over (order by sum(b))
from t1
group by a
order by null;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "sum(t1.b)"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 10,
"filtered": 100
}
}
}
}
}
#
# Check how window function works together with GROUP BY and HAVING
#
select b,max(a) as MX, rank() over (order by b) from t1 group by b having MX in (3,5,7);
b MX rank() over (order by b)
3 3 1
5 5 2
7 7 3
explain format=json
select b,max(a) as MX, rank() over (order by b) from t1 group by b having MX in (3,5,7);
EXPLAIN
{
"query_block": {
"select_id": 1,
"having_condition": "MX in (3,5,7)",
"filesort": {
"sort_key": "t1.b",
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.b"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 10,
"filtered": 100
}
}
}
}
}
}
drop table t1;
drop table t0;
#
# Building ordering index for window functions
#
create table t1 (
pk int primary key,
a int,
b int,
c int
);
insert into t1 values
(101 , 0, 10, 1),
(102 , 0, 10, 2),
(103 , 1, 10, 3),
(104 , 1, 10, 4),
(108 , 2, 10, 5),
(105 , 2, 20, 6),
(106 , 2, 20, 7),
(107 , 2, 20, 8),
(109 , 4, 20, 9),
(110 , 4, 20, 10),
(111 , 5, NULL, 11),
(112 , 5, 1, 12),
(113 , 5, NULL, 13),
(114 , 5, NULL, 14),
(115 , 5, NULL, 15),
(116 , 6, 1, NULL),
(117 , 6, 1, 10),
(118 , 6, 1, 1),
(119 , 6, 1, NULL),
(120 , 6, 1, NULL),
(121 , 6, 1, NULL),
(122 , 6, 1, 2),
(123 , 6, 1, 20),
(124 , 6, 1, -10),
(125 , 6, 1, NULL),
(126 , 6, 1, NULL),
(127 , 6, 1, NULL);
select sum(b) over (partition by a order by b,pk
rows between unbounded preceding and current row) as c1,
avg(b) over (w1 rows between 1 preceding and 1 following) as c2,
sum(c) over (w2 rows between 1 preceding and 1 following) as c5,
avg(b) over (w1 rows between 5 preceding and 5 following) as c3,
sum(b) over (w1 rows between 1 preceding and 1 following) as c4
from t1
window w1 as (partition by a order by b,pk),
w2 as (partition by b order by c,pk);
c1 c2 c5 c3 c4
1 1.0000 42 1.0000 1
1 1.0000 NULL 1.0000 2
10 1.0000 NULL 1.0000 3
10 10.0000 3 10.0000 20
10 10.0000 9 10.0000 20
10 15.0000 9 17.5000 30
11 1.0000 NULL 1.0000 3
12 1.0000 -10 1.0000 2
2 1.0000 24 1.0000 3
20 10.0000 12 10.0000 20
20 10.0000 6 10.0000 20
20 20.0000 27 20.0000 40
3 1.0000 -7 1.0000 3
30 16.6667 13 17.5000 50
4 1.0000 NULL 1.0000 3
40 20.0000 19 20.0000 40
5 1.0000 NULL 1.0000 3
50 20.0000 21 17.5000 60
6 1.0000 NULL 1.0000 3
7 1.0000 13 1.0000 3
70 20.0000 24 17.5000 40
8 1.0000 32 1.0000 3
9 1.0000 -9 1.0000 3
NULL 1.0000 29 1.0000 1
NULL NULL 24 1.0000 NULL
NULL NULL 38 1.0000 NULL
NULL NULL 42 1.0000 NULL
drop table t1;
#
# MDEV-9848: Window functions: reuse sorting and/or scanning
#
create table t1 (a int, b int, c int);
insert into t1 values
(1,3,1),
(2,2,1),
(3,1,1);
# Check using counters
flush status;
select
rank() over (partition by c order by a),
rank() over (partition by c order by b)
from t1;
rank() over (partition by c order by a) rank() over (partition by c order by b)
1 3
2 2
3 1
show status like '%sort%';
Variable_name Value
Sort_merge_passes 0
Sort_priority_queue_sorts 0
Sort_range 0
Sort_rows 6
Sort_scan 2
flush status;
select
rank() over (partition by c order by a),
rank() over (partition by c order by a)
from t1;
rank() over (partition by c order by a) rank() over (partition by c order by a)
1 1
2 2
3 3
show status like '%sort%';
Variable_name Value
Sort_merge_passes 0
Sort_priority_queue_sorts 0
Sort_range 0
Sort_rows 3
Sort_scan 1
explain format=json
select
rank() over (partition by c order by a),
rank() over (partition by c order by a)
from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.c, t1.a"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
}
}
}
explain format=json
select
rank() over (order by a),
row_number() over (order by a)
from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.a"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
}
}
}
explain format=json
select
rank() over (partition by c order by a),
count(*) over (partition by c)
from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.c, t1.a"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
}
}
}
explain format=json
select
count(*) over (partition by c),
rank() over (partition by c order by a)
from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.c, t1.a"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
}
}
}
drop table t1;
#
# MDEV-9847: Window functions: crash with big_tables=1
#
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
set @tmp=@@big_tables;
set big_tables=1;
select rank() over (order by a) from t1;
rank() over (order by a)
1
2
3
4
5
6
7
8
9
10
set big_tables=@tmp;
drop table t1;
#
# Check if "ORDER BY window_func" works
#
create table t1 (s1 int, s2 char(5));
insert into t1 values (1,'a');
insert into t1 values (null,null);
insert into t1 values (1,null);
insert into t1 values (null,'a');
insert into t1 values (2,'b');
insert into t1 values (-1,'');
explain format=json
select *, row_number() over (order by s1, s2) as X from t1 order by X desc;
EXPLAIN
{
"query_block": {
"select_id": 1,
"filesort": {
"sort_key": "row_number() over ( order by t1.s1,t1.s2) desc",
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.s1, t1.s2"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 6,
"filtered": 100
}
}
}
}
}
}
select *, row_number() over (order by s1, s2) as X from t1 order by X desc;
s1 s2 X
2 b 6
1 a 5
1 NULL 4
-1 3
NULL a 2
NULL NULL 1
drop table t1;
#
# Try window functions that are not directly present in the select list
#
create table t1 (a int, b int);
insert into t1 values
(1,3),
(2,2),
(3,1);
select
a, b,
rank() over (order by a), rank() over (order by b),
rank() over (order by a) - rank() over (order by b) as diff
from
t1;
a b rank() over (order by a) rank() over (order by b) diff
1 3 1 3 -2
2 2 2 2 0
3 1 3 1 2
drop table t1;
create table t1 (i int);
insert into t1 values (1),(2);
SELECT MAX(i) OVER (PARTITION BY (i)) FROM t1;
MAX(i) OVER (PARTITION BY (i))
1
2
drop table t1;
#
# Check the 0 in ROWS 0 PRECEDING
#
create table t1 (
part_id int,
pk int,
a int
);
insert into t1 values (1, 1, 1);
insert into t1 values (1, 2, 2);
insert into t1 values (1, 3, 4);
insert into t1 values (1, 4, 8);
select
pk, a,
sum(a) over (order by pk rows between 0 preceding and current row)
from t1;
pk a sum(a) over (order by pk rows between 0 preceding and current row)
1 1 1
2 2 2
3 4 4
4 8 8
select
pk, a,
sum(a) over (order by pk rows between 1 preceding and 0 preceding)
from t1;
pk a sum(a) over (order by pk rows between 1 preceding and 0 preceding)
1 1 1
2 2 3
3 4 6
4 8 12
insert into t1 values (200, 1, 1);
insert into t1 values (200, 2, 2);
insert into t1 values (200, 3, 4);
insert into t1 values (200, 4, 8);
select
part_id, pk, a,
sum(a) over (partition by part_id order by pk rows between 0 preceding and current row)
from t1;
part_id pk a sum(a) over (partition by part_id order by pk rows between 0 preceding and current row)
1 1 1 1
1 2 2 2
1 3 4 4
1 4 8 8
200 1 1 1
200 2 2 2
200 3 4 4
200 4 8 8
select
part_id, pk, a,
sum(a) over (partition by part_id order by pk rows between 1 preceding and 0 preceding)
from t1;
part_id pk a sum(a) over (partition by part_id order by pk rows between 1 preceding and 0 preceding)
1 1 1 1
1 2 2 3
1 3 4 6
1 4 8 12
200 1 1 1
200 2 2 3
200 3 4 6
200 4 8 12
drop table t1;
#
# MDEV-9780, The "DISTINCT must not bet converted into GROUP BY when
# window functions are present" part
#
create table t1 (part_id int, a int);
insert into t1 values
(100, 1),
(100, 2),
(100, 2),
(100, 3),
(2000, 1),
(2000, 2),
(2000, 3),
(2000, 3),
(2000, 3);
select rank() over (partition by part_id order by a) from t1;
rank() over (partition by part_id order by a)
1
2
2
4
1
2
3
3
3
select distinct rank() over (partition by part_id order by a) from t1;
rank() over (partition by part_id order by a)
1
2
4
3
explain format=json
select distinct rank() over (partition by part_id order by a) from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"duplicate_removal": {
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.part_id, t1.a"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 9,
"filtered": 100
}
}
}
}
}
}
drop table t1;
#
# MDEV-9893: Window functions with different ORDER BY lists,
# one of these lists containing an expression
#
create table t1 (s1 int, s2 char(5));
insert into t1 values (1,'a');
insert into t1 values (null,null);
insert into t1 values (3,null);
insert into t1 values (4,'a');
insert into t1 values (2,'b');
insert into t1 values (-1,'');
select
*,
ROW_NUMBER() OVER (order by s1),
CUME_DIST() OVER (order by -s1)
from t1;
s1 s2 ROW_NUMBER() OVER (order by s1) CUME_DIST() OVER (order by -s1)
-1 2 1.0000000000
1 a 3 0.8333333333
2 b 4 0.6666666667
3 NULL 5 0.5000000000
4 a 6 0.3333333333
NULL NULL 1 0.1666666667
drop table t1;
#
# MDEV-9925: Wrong result with aggregate function as a window function
#
create table t1 (i int);
insert into t1 values (1),(2);
select i, sum(i) over (partition by i) from t1;
i sum(i) over (partition by i)
1 1
2 2
drop table t1;
#
# MDEV-9922: Assertion `!join->only_const_tables() && fsort' failed in int create_sort_index
#
create view v1 as select 1 as i;
select rank() over (order by i) from v1;
rank() over (order by i)
1
drop view v1;
#
# MDEV-10097: Assertion `count > 0' failed in Item_sum_sum::add_helper(bool)
#
CREATE TABLE `orders` (
`o_orderkey` int(11) NOT NULL,
`o_custkey` int(11) DEFAULT NULL,
PRIMARY KEY (`o_orderkey`)
) DEFAULT CHARSET=latin1;
INSERT INTO `orders` VALUES (59908,242);
INSERT INTO `orders` VALUES (59940,238);
SELECT o_custkey, avg(o_custkey) OVER (PARTITION BY abs(o_custkey)
ORDER BY o_custkey
RANGE BETWEEN 15 FOLLOWING
AND 15 FOLLOWING) from orders;
o_custkey avg(o_custkey) OVER (PARTITION BY abs(o_custkey)
ORDER BY o_custkey
RANGE BETWEEN 15 FOLLOWING
AND 15 FOLLOWING)
238 NULL
242 NULL
DROP table orders;
#
# MDEV-10842: window functions with the same order column
# but different directions
#
create table t1 (
pk int primary key,
a int,
b int,
c char(10)
);
insert into t1 values
( 1, 0, 1, 'one'),
( 2, 0, 2, 'two'),
( 3, 0, 3, 'three'),
( 4, 1, 1, 'one'),
( 5, 1, 1, 'two'),
( 6, 1, 2, 'three'),
( 7, 2, NULL, 'n_one'),
( 8, 2, 1, 'n_two'),
( 9, 2, 2, 'n_three'),
(10, 2, 0, 'n_four'),
(11, 2, 10, NULL);
select pk,
row_number() over (order by pk desc) as r_desc,
row_number() over (order by pk asc) as r_asc
from t1;
pk r_desc r_asc
11 1 11
10 2 10
9 3 9
8 4 8
7 5 7
6 6 6
5 7 5
4 8 4
3 9 3
2 10 2
1 11 1
drop table t1;
#
# MDEV-10874: two window functions with compatible sorting
#
create table t1 (
pk int primary key,
a int,
b int,
c char(10),
d decimal(10, 3),
e real
);
insert into t1 values
( 1, 0, 1, 'one', 0.1, 0.001),
( 2, 0, 2, 'two', 0.2, 0.002),
( 3, 0, 3, 'three', 0.3, 0.003),
( 4, 1, 2, 'three', 0.4, 0.004),
( 5, 1, 1, 'two', 0.5, 0.005),
( 6, 1, 1, 'one', 0.6, 0.006),
( 7, 2, NULL, 'n_one', 0.5, 0.007),
( 8, 2, 1, 'n_two', NULL, 0.008),
( 9, 2, 2, NULL, 0.7, 0.009),
(10, 2, 0, 'n_four', 0.8, 0.010),
(11, 2, 10, NULL, 0.9, NULL);
select pk, a, d,
sum(d) over (partition by a order by pk
ROWS between 1 preceding and current row) as sum_1,
sum(d) over (order by a
ROWS BETWEEN 1 preceding and 2 following) as sum_2
from t1;
pk a d sum_1 sum_2
1 0 0.100 0.100 0.600
2 0 0.200 0.300 1.000
3 0 0.300 0.500 1.400
4 1 0.400 0.400 1.800
5 1 0.500 0.900 2.000
6 1 0.600 1.100 1.600
7 2 0.500 0.500 1.800
8 2 NULL 0.500 2.000
9 2 0.700 0.700 2.400
10 2 0.800 1.500 2.400
11 2 0.900 1.700 1.700
explain format=json
select pk, a, d,
sum(d) over (partition by a order by pk
ROWS between 1 preceding and current row) as sum_1,
sum(d) over (order by a
ROWS BETWEEN 1 preceding and 2 following) as sum_2
from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.a, t1.pk"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 11,
"filtered": 100
}
}
}
}
}
select pk, a, d,
sum(d) over (partition by a order by pk desc
ROWS between 1 preceding and current row) as sum_1,
sum(d) over (order by a
ROWS BETWEEN 1 preceding and 2 following) as sum_2
from t1;
pk a d sum_1 sum_2
3 0 0.300 0.300 0.600
2 0 0.200 0.500 1.200
1 0 0.100 0.300 1.400
6 1 0.600 0.600 1.600
5 1 0.500 1.100 2.400
4 1 0.400 0.900 2.600
11 2 0.900 0.900 2.800
10 2 0.800 1.700 2.400
9 2 0.700 1.500 2.000
8 2 NULL 0.700 1.200
7 2 0.500 0.500 0.500
drop table t1;
#
# MDEV-9941: two window functions with compatible partitions
#
create table t1 (
a int,
b int,
c int
);
insert into t1 values
(10, 1, 1),
(10, 3, 10),
(10, 1, 10),
(10, 3, 100),
(10, 5, 1000),
(10, 1, 100);
explain format=json
select
a,b,c,
row_number() over (partition by a),
row_number() over (partition by a, b)
from t1;
EXPLAIN
{
"query_block": {
"select_id": 1,
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "t1.a, t1.b"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 6,
"filtered": 100
}
}
}
}
}
drop table t1;
#
# MDEV-10815: Window Function Expressions Wrong Results
#
create table t(a decimal(35,10), b int);
insert into t(a,b) values(1,1);
insert into t(a,b) values(2,1);
insert into t(a,b) values(0,1);
insert into t(a,b) values(1, 2);
insert into t(a,b) values(1.5,2);
insert into t(a,b) values(3, 2);
insert into t(a,b) values(4.5,2);
select a, b,
sum(t.a) over (partition by t.b order by a) as simple_sum,
sum(t.a) over (partition by t.b order by a) + 1 as sum_and_const,
sum(t.b) over (partition by t.b order by a) + sum(t.a) over (partition by t.b order by a) as sum_and_sum
from t
order by t.b, t.a;
a b simple_sum sum_and_const sum_and_sum
0.0000000000 1 0.0000000000 1.0000000000 1.0000000000
1.0000000000 1 1.0000000000 2.0000000000 3.0000000000
2.0000000000 1 3.0000000000 4.0000000000 6.0000000000
1.0000000000 2 1.0000000000 2.0000000000 3.0000000000
1.5000000000 2 2.5000000000 3.5000000000 6.5000000000
3.0000000000 2 5.5000000000 6.5000000000 11.5000000000
4.5000000000 2 10.0000000000 11.0000000000 18.0000000000
drop table t;
#
# MDEV-10669: Crash in SELECT with window function used
#
create table t(a decimal(35,10), b int);
insert into t(a,b) values(1,1);
insert into t(a,b) values(2,1);
insert into t(a,b) values(0,1);
SELECT (CASE WHEN sum(t.a) over (partition by t.b)=0 THEN null ELSE null END) AS a FROM t;
a
NULL
NULL
NULL
SELECT ifnull(((t.a) / CASE WHEN sum(t.a) over(partition by t.b) =0 then null else null end) ,0) from t;
ifnull(((t.a) / CASE WHEN sum(t.a) over(partition by t.b) =0 then null else null end) ,0)
0.00000000000000
0.00000000000000
0.00000000000000
SELECT sum(t.a) over (partition by t.b order by a),
sqrt(ifnull((sum(t.a) over (partition by t.b order by a)), 0))
from t;
sum(t.a) over (partition by t.b order by a) sqrt(ifnull((sum(t.a) over (partition by t.b order by a)), 0))
0.0000000000 0
1.0000000000 1
3.0000000000 1.7320508075688772
drop table t;
#
# MDEV-10868: view definitions with window functions
#
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (pk int, c int);
insert into t1 select a+1,1 from t0;
update t1 set c=2 where pk not in (1,2,3,4);
select * from t1;
pk c
1 1
2 1
3 1
4 1
5 2
6 2
7 2
8 2
9 2
10 2
select pk, c, c/count(*) over (partition by c order by pk
rows between 1 preceding and 2 following) as CNT
from t1;
pk c CNT
1 1 0.3333
2 1 0.2500
3 1 0.3333
4 1 0.5000
5 2 0.6667
6 2 0.5000
7 2 0.5000
8 2 0.5000
9 2 0.6667
10 2 1.0000
create view v1 as select pk, c, c/count(*) over (partition by c order by pk
rows between 1 preceding and 2 following) as CNT
from t1;
show create view v1;
View Create View character_set_client collation_connection
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`pk` AS `pk`,`t1`.`c` AS `c`,`t1`.`c` / count(0) over ( partition by `t1`.`c` order by `t1`.`pk` rows between 1 preceding and 2 following ) AS `CNT` from `t1` latin1 latin1_swedish_ci
select * from v1;
pk c CNT
1 1 0.3333
2 1 0.2500
3 1 0.3333
4 1 0.5000
5 2 0.6667
6 2 0.5000
7 2 0.5000
8 2 0.5000
9 2 0.6667
10 2 1.0000
select pk, c, c/count(*) over w1 as CNT from t1
window w1 as (partition by c order by pk rows between 1 preceding and 2 following);
pk c CNT
1 1 0.3333
2 1 0.2500
3 1 0.3333
4 1 0.5000
5 2 0.6667
6 2 0.5000
7 2 0.5000
8 2 0.5000
9 2 0.6667
10 2 1.0000
create view v2 as select pk, c, c/count(*) over w1 as CNT from t1
window w1 as (partition by c order by pk rows between 1 preceding and 2 following);
show create view v2;
View Create View character_set_client collation_connection
v2 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS select `t1`.`pk` AS `pk`,`t1`.`c` AS `c`,`t1`.`c` / count(0) over ( partition by `t1`.`c` order by `t1`.`pk` rows between 1 preceding and 2 following ) AS `CNT` from `t1` latin1 latin1_swedish_ci
select * from v2;
pk c CNT
1 1 0.3333
2 1 0.2500
3 1 0.3333
4 1 0.5000
5 2 0.6667
6 2 0.5000
7 2 0.5000
8 2 0.5000
9 2 0.6667
10 2 1.0000
select pk, c, c/count(*) over w1 as CNT from t1
window w1 as (partition by c order by pk rows unbounded preceding);
pk c CNT
1 1 1.0000
2 1 0.5000
3 1 0.3333
4 1 0.2500
5 2 2.0000
6 2 1.0000
7 2 0.6667
8 2 0.5000
9 2 0.4000
10 2 0.3333
create view v3 as select pk, c, c/count(*) over w1 as CNT from t1
window w1 as (partition by c order by pk rows unbounded preceding);
show create view v3;
View Create View character_set_client collation_connection
v3 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v3` AS select `t1`.`pk` AS `pk`,`t1`.`c` AS `c`,`t1`.`c` / count(0) over ( partition by `t1`.`c` order by `t1`.`pk` rows between unbounded preceding and current row ) AS `CNT` from `t1` latin1 latin1_swedish_ci
select * from v3;
pk c CNT
1 1 1.0000
2 1 0.5000
3 1 0.3333
4 1 0.2500
5 2 2.0000
6 2 1.0000
7 2 0.6667
8 2 0.5000
9 2 0.4000
10 2 0.3333
select pk, c, c/count(*) over (partition by c order by pk
range between 3 preceding and current row) as CNT
from t1;
pk c CNT
1 1 1.0000
2 1 0.5000
3 1 0.3333
4 1 0.2500
5 2 2.0000
6 2 1.0000
7 2 0.6667
8 2 0.5000
9 2 0.5000
10 2 0.5000
create view v4 as select pk, c, c/count(*) over (partition by c order by pk
range between 3 preceding and current row) as CNT
from t1;
show create view v4;
View Create View character_set_client collation_connection
v4 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v4` AS select `t1`.`pk` AS `pk`,`t1`.`c` AS `c`,`t1`.`c` / count(0) over ( partition by `t1`.`c` order by `t1`.`pk` range between 3 preceding and current row ) AS `CNT` from `t1` latin1 latin1_swedish_ci
select * from v4;
pk c CNT
1 1 1.0000
2 1 0.5000
3 1 0.3333
4 1 0.2500
5 2 2.0000
6 2 1.0000
7 2 0.6667
8 2 0.5000
9 2 0.5000
10 2 0.5000
drop view v1,v2,v3,v4;
drop table t0,t1;
#
# MDEV-10875: window function in subquery
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (3),(1);
CREATE TABLE t2 (c VARCHAR(8));
INSERT INTO t2 VALUES ('foo'),('bar'),('foo');
SELECT COUNT(*) OVER (PARTITION BY c) FROM t2;
COUNT(*) OVER (PARTITION BY c)
1
2
2
SELECT * FROM t1 WHERE i IN ( SELECT COUNT(*) OVER (PARTITION BY c) FROM t2 );
i
1
DROP TABLE t1, t2;
#
# MDEV-9976: window function without PARTITION BY and ORDER BY
#
CREATE TABLE t1 (id int, a int);
INSERT INTO t1 VALUES
(1,1000), (2,1100), (3,1800), (4,1500), (5,1700), (6,1200),
(7,2000), (8,2100), (9,1600);
SELECT id, sum(a) OVER (PARTITION BY id
ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING)
FROM t1;
id sum(a) OVER (PARTITION BY id
1 1000
2 1100
3 1800
4 1500
5 1700
6 1200
7 2000
8 2100
9 1600
ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING)
SELECT id, sum(a) OVER (ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING)
FROM t1;
id sum(a) OVER (ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING)
1 14000
2 13000
3 5900
4 10700
5 7600
6 11900
7 4100
8 2100
9 9200
DROP TABLE t1;
#
# MDEV-11867: window function with aggregation
# over the result of grouping
#
create table t1 (
username varchar(32),
amount int
);
insert into t1 values
('user1',1),
('user1',5),
('user1',3),
('user2',10),
('user2',20),
('user2',30);
select username, sum(amount) as s, avg(sum(amount)) over (order by s desc)
from t1
group by username;
username s avg(sum(amount)) over (order by s desc)
user1 9 34.5000
user2 60 60.0000
select username, sum(amount), avg(sum(amount)) over (order by sum(amount) desc)
from t1
group by username;
username sum(amount) avg(sum(amount)) over (order by sum(amount) desc)
user1 9 34.5000
user2 60 60.0000
drop table t1;
#
# MDEV-11594: window function over implicit grouping
#
create table t1 (id int);
insert into t1 values (1), (2), (3), (2);
select sum(id) over (order by sum(id)) from t1;
sum(id) over (order by sum(id))
1
select sum(sum(id)) over (order by sum(id)) from t1;
sum(sum(id)) over (order by sum(id))
8
drop table t1;
#
# MDEV-9923: integer constant in order by list
# of window specification
#
create table t1 (id int);
insert into t1 values (1), (2), (3), (2);
select rank() over (order by 1) from t1;
rank() over (order by 1)
1
1
1
1
select rank() over (order by 2) from t1;
rank() over (order by 2)
1
1
1
1
select rank() over (partition by id order by 2) from t1;
rank() over (partition by id order by 2)
1
1
1
1
drop table t1;
#
# MDEV-10660: view using a simple window function
#
create table t1 (id int);
insert into t1 values (1), (2), (3), (2);
create view v1(id,rnk) as
select id, rank() over (order by id) from t1;
show create view v1;
View Create View character_set_client collation_connection
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`id` AS `id`,rank() over ( order by `t1`.`id`) AS `rnk` from `t1` latin1 latin1_swedish_ci
select id, rank() over (order by id) from t1;
id rank() over (order by id)
1 1
2 2
2 2
3 4
select * from v1;
id rnk
1 1
2 2
2 2
3 4
drop view v1;
drop table t1;
#
# MDEV-11138: window function in the query without tables
#
select row_number() over ();
row_number() over ()
1
select count(*) over ();
count(*) over ()
1
select sum(5) over ();
sum(5) over ()
5
select row_number() over (), sum(5) over ();
row_number() over () sum(5) over ()
1 5
select row_number() over (order by 2);
row_number() over (order by 2)
1
select row_number() over (partition by 2);
row_number() over (partition by 2)
1
select row_number() over (partition by 4 order by 1+2);
row_number() over (partition by 4 order by 1+2)
1
#
# MDEV-11999: execution of prepared statement for
# tableless query with window functions
#
prepare stmt from
"select row_number() over (partition by 4 order by 1+2)";
execute stmt;
row_number() over (partition by 4 order by 1+2)
1
execute stmt;
row_number() over (partition by 4 order by 1+2)
1
deallocate prepare stmt;
#
# MDEV-11745: window function with min/max
#
create table t1 (i int, b int);
insert into t1 values
(1,1),(2,1),(3,1),(4,4),(5,4),(6,4),(7,8),(8,8),(9,8),(10,8);
select b, min(i) over (partition by b) as f
from t1 as tt
order by i;
b f
1 1
1 1
1 1
4 4
4 4
4 4
8 7
8 7
8 7
8 7
select b, min(i) over (partition by b) as f
from (select * from t1) as tt
order by i;
b f
1 1
1 1
1 1
4 4
4 4
4 4
8 7
8 7
8 7
8 7
select b, min(i+10) over (partition by b) as f
from t1 as tt
order by i;
b f
1 11
1 11
1 11
4 14
4 14
4 14
8 17
8 17
8 17
8 17
select b, min(i) over (partition by b) as f
from (select i+10 as i, b from t1) as tt
order by i;
b f
1 11
1 11
1 11
4 14
4 14
4 14
8 17
8 17
8 17
8 17
select b, min(i+20) over (partition by b) as f
from (select i+10 as i, b from t1) as tt
order by i;
b f
1 31
1 31
1 31
4 34
4 34
4 34
8 37
8 37
8 37
8 37
select b, max(i) over (partition by b) as f
from t1 as tt
order by i;
b f
1 3
1 3
1 3
4 6
4 6
4 6
8 10
8 10
8 10
8 10
select b, max(i) over (partition by b) as f
from (select * from t1) as tt
order by i;
b f
1 3
1 3
1 3
4 6
4 6
4 6
8 10
8 10
8 10
8 10
select b, max(i+10) over (partition by b) as f
from t1 as tt
order by i;
b f
1 13
1 13
1 13
4 16
4 16
4 16
8 20
8 20
8 20
8 20
select b, max(i) over (partition by b) as f
from (select i+10 as i, b from t1) as tt
order by i;
b f
1 13
1 13
1 13
4 16
4 16
4 16
8 20
8 20
8 20
8 20
select b, max(i+20) over (partition by b) as f
from (select i+10 as i, b from t1) as tt
order by i;
b f
1 33
1 33
1 33
4 36
4 36
4 36
8 40
8 40
8 40
8 40
select max(i), max(i), sum(i), count(i)
from t1 as tt
group by b;
max(i) max(i) sum(i) count(i)
3 3 6 3
6 6 15 3
10 10 34 4
select max(i), min(sum(i)) over (partition by count(i)) f
from t1 as tt
group by b;
max(i) f
3 6
6 6
10 34
select max(i), min(sum(i)) over (partition by count(i)) f
from (select * from t1) as tt
group by b;
max(i) f
3 6
6 6
10 34
select max(i+10), min(sum(i)+10) over (partition by count(i)) f
from t1 as tt
group by b;
max(i+10) f
13 16
16 16
20 44
select max(i), max(i), sum(i), count(i)
from (select i+10 as i, b from t1) as tt
group by b;
max(i) max(i) sum(i) count(i)
13 13 36 3
16 16 45 3
20 20 74 4
select max(i), min(sum(i)) over (partition by count(i)) f
from (select i+10 as i, b from t1) as tt
group by b;
max(i) f
13 36
16 36
20 74
select max(i), min(i), min(max(i)-min(i)) over (partition by count(i)) f
from (select i+10 as i, b from t1) as tt
group by b;
max(i) min(i) f
13 11 2
16 14 2
20 17 3
drop table t1;
#
# MDEV-12015: window function over select with WHERE
# that is always FALSE
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (3), (1), (2);
SELECT i, ROW_NUMBER() OVER () FROM t1 WHERE 1 = 2;
i ROW_NUMBER() OVER ()
SELECT i, COUNT(*) OVER () FROM t1 WHERE 1 = 2;
i COUNT(*) OVER ()
DROP TABLE t1;
#
# MDEV-12051: window function in query with implicit grouping
# on always empty set
#
create table t1 (a int, b varchar(8));
insert into t1 values (1,'foo'),(2,'bar');
select max(a), row_number() over () from t1 where a > 10;
max(a) row_number() over ()
NULL 1
select max(a), sum(max(a)) over () from t1 where a > 10;
max(a) sum(max(a)) over ()
NULL NULL
select max(a), sum(max(a)) over (partition by max(a)) from t1 where a > 10;
max(a) sum(max(a)) over (partition by max(a))
NULL NULL
select max(a), row_number() over () from t1 where 1 = 2;
max(a) row_number() over ()
NULL 1
select max(a), sum(max(a)) over () from t1 where 1 = 2;
max(a) sum(max(a)) over ()
NULL NULL
select max(a), sum(max(a)) over (partition by max(a)) from t1 where 1 = 2;
max(a) sum(max(a)) over (partition by max(a))
NULL NULL
select max(a), row_number() over () from t1 where 1 = 2
having max(a) is not null;
max(a) row_number() over ()
select max(a), sum(max(a)) over () from t1 where 1 = 2
having max(a) is not null;
max(a) sum(max(a)) over ()
drop table t1;
#
# MDEV-10885: window function in query with implicit grouping
# with constant condition evaluated to false
#
CREATE TABLE t1 (a INT, b VARCHAR(8));
INSERT INTO t1 VALUES (1,'foo'),(2,'bar');
CREATE TABLE t2 (c INT);
INSERT INTO t2 VALUES (3),(4);
CREATE TABLE t3 (d INT);
INSERT INTO t3 VALUES (5),(6);
SELECT MAX(a), ROW_NUMBER() OVER (PARTITION BY MAX(a)) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) );
MAX(a) ROW_NUMBER() OVER (PARTITION BY MAX(a))
NULL 1
SELECT MAX(a), COUNT(MAX(a)) OVER (PARTITION BY MAX(a)) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) );
MAX(a) COUNT(MAX(a)) OVER (PARTITION BY MAX(a))
NULL 0
SELECT MAX(a), SUM(MAX(a)) OVER (PARTITION BY MAX(a)) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) );
MAX(a) SUM(MAX(a)) OVER (PARTITION BY MAX(a))
NULL NULL
SELECT MAX(a), ROW_NUMBER() OVER (PARTITION BY MAX(a)) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) )
HAVING MAX(a) IS NOT NULL;
MAX(a) ROW_NUMBER() OVER (PARTITION BY MAX(a))
SELECT a, MAX(a), ROW_NUMBER() OVER (PARTITION BY b) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) );
a MAX(a) ROW_NUMBER() OVER (PARTITION BY b)
NULL NULL 1
SELECT a, COUNT(a), AVG(a) OVER (PARTITION BY b) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) );
a COUNT(a) AVG(a) OVER (PARTITION BY b)
NULL 0 NULL
SELECT a, MAX(a), AVG(a) OVER (PARTITION BY b) FROM t1
WHERE EXISTS ( SELECT * FROM t2 WHERE c IN ( SELECT MAX(d) FROM t3 ) );
a MAX(a) AVG(a) OVER (PARTITION BY b)
NULL NULL NULL
DROP TABLE t1,t2,t3;
#
# MDEV-10859: Wrong result of aggregate window function in query
# with HAVING and no ORDER BY
#
create table empsalary (depname varchar(32), empno smallint primary key, salary int);
insert into empsalary values
('develop', 1, 5000), ('develop', 2, 4000),('sales', 3, '6000'),('sales', 4, 5000);
SELECT depname, empno, salary, avg(salary) OVER (PARTITION BY depname) FROM empsalary;
depname empno salary avg(salary) OVER (PARTITION BY depname)
develop 1 5000 4500.0000
develop 2 4000 4500.0000
sales 3 6000 5500.0000
sales 4 5000 5500.0000
SELECT depname, empno, salary, avg(salary) OVER (PARTITION BY depname) FROM empsalary ORDER BY depname;
depname empno salary avg(salary) OVER (PARTITION BY depname)
develop 1 5000 4500.0000
develop 2 4000 4500.0000
sales 3 6000 5500.0000
sales 4 5000 5500.0000
#
# These last 2 should have the same row results, ignoring order.
#
SELECT depname, empno, salary, avg(salary) OVER (PARTITION BY depname) FROM empsalary HAVING empno > 1;
depname empno salary avg(salary) OVER (PARTITION BY depname)
develop 2 4000 4000.0000
sales 3 6000 5500.0000
sales 4 5000 5500.0000
SELECT depname, empno, salary, avg(salary) OVER (PARTITION BY depname) FROM empsalary HAVING empno > 1 ORDER BY depname;
depname empno salary avg(salary) OVER (PARTITION BY depname)
develop 2 4000 4000.0000
sales 3 6000 5500.0000
sales 4 5000 5500.0000
drop table empsalary;
#
# MDEV-11868: min(distinct) over () returns wrong value
#
create table TDEC (CDEC int, RNUM int);
create view VDEC as select * from TDEC;
insert into TDEC (CDEC) values (null),(-1),(0),(1),(0),(10);
select TDEC.CDEC, min(TDEC.CDEC) over () from TDEC;
CDEC min(TDEC.CDEC) over ()
NULL -1
-1 -1
0 -1
0 -1
1 -1
10 -1
select VDEC.CDEC, min(VDEC.CDEC) over () from VDEC;
CDEC min(VDEC.CDEC) over ()
NULL -1
-1 -1
0 -1
0 -1
1 -1
10 -1
select TDEC.CDEC, max(TDEC.CDEC) over () from TDEC;
CDEC max(TDEC.CDEC) over ()
NULL 10
-1 10
0 10
0 10
1 10
10 10
select VDEC.CDEC, max(VDEC.CDEC) over () from VDEC;
CDEC max(VDEC.CDEC) over ()
NULL 10
-1 10
0 10
0 10
1 10
10 10
select TDEC.CDEC, min(distinct TDEC.CDEC) over () from TDEC;
CDEC min(distinct TDEC.CDEC) over ()
NULL -1
-1 -1
0 -1
0 -1
1 -1
10 -1
select VDEC.CDEC, min(distinct VDEC.CDEC) over () from VDEC;
CDEC min(distinct VDEC.CDEC) over ()
NULL -1
-1 -1
0 -1
0 -1
1 -1
10 -1
select TDEC.CDEC, max(distinct TDEC.CDEC) over () from TDEC;
CDEC max(distinct TDEC.CDEC) over ()
NULL 10
-1 10
0 10
0 10
1 10
10 10
select VDEC.CDEC, max(distinct VDEC.CDEC) over () from VDEC;
CDEC max(distinct VDEC.CDEC) over ()
NULL 10
-1 10
0 10
0 10
1 10
10 10
#
# These should be removed once support for them is added.
#
select TDEC.CDEC, count(distinct TDEC.CDEC) over () from TDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'COUNT(DISTINCT) aggregate as window function'
select VDEC.CDEC, count(distinct VDEC.CDEC) over () from VDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'COUNT(DISTINCT) aggregate as window function'
select TDEC.CDEC, sum(distinct TDEC.CDEC) over () from TDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'SUM(DISTINCT) aggregate as window function'
select VDEC.CDEC, sum(distinct VDEC.CDEC) over () from VDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'SUM(DISTINCT) aggregate as window function'
select TDEC.CDEC, avg(distinct TDEC.CDEC) over () from TDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'AVG(DISTINCT) aggregate as window function'
select VDEC.CDEC, avg(distinct VDEC.CDEC) over () from VDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'AVG(DISTINCT) aggregate as window function'
select TDEC.CDEC, GROUP_CONCAT(TDEC.CDEC) over () from TDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'GROUP_CONCAT() aggregate as window function'
select VDEC.CDEC, GROUP_CONCAT(distinct VDEC.CDEC) over () from VDEC;
ERROR 42000: This version of MariaDB doesn't yet support 'GROUP_CONCAT() aggregate as window function'
drop table TDEC;
drop view VDEC;
#
# MDEV-10700: 10.2.2 windowing function returns incorrect result
#
create table t(a int,b int, c int , d int);
insert into t(a,b,c,d) values(1, rand(10)*1000, rand(10)*1000, rand(10)*1000);
insert into t(a,b,c,d) values(1, rand(10)*1000, rand(10)*1000, rand(10)*1000);
replace into t(a,b,c,d) select 1, rand(10)*1000, rand(10)*1000, rand(10)*1000 from t t1, t t2, t t3, t t4, t t5, t t6, t t7, t t8, t t9, t t10, t t11, t t12, t t13, t t14, t t15, t t16, t t17;
select count(distinct s) from (select sum(d) over(partition by a,b,c) as s from t) Z where s > 0;
count(distinct s)
993
select count(distinct s) from (select sum(d) as s from t group by a,b,c) Z where s > 0;
count(distinct s)
993
select count(distinct s) from (select sum(d) over(partition by a,b) as s from t) Z where s > 0;
count(distinct s)
993
select count(distinct s) from (select sum(d) as s from t group by a,b) Z where s > 0;
count(distinct s)
993
select count(distinct s) from (select sum(d) over(partition by a) as s from t) Z where s > 0;
count(distinct s)
1
select count(distinct s) from (select sum(d) as s from t group by a) Z where s > 0;
count(distinct s)
1
drop table t;
#
# MDEV-9924: window function in query with group by optimized away
#
create table t1 (i int);
insert into t1 values (2),(3),(1);
select row_number() over () from t1 group by 1+2;
row_number() over ()
1
select max(i), row_number() over () from t1 group by 1+2;
max(i) row_number() over ()
3 1
select rank() over (order by max(i)) from t1 group by 1+2;
rank() over (order by max(i))
1
select i, row_number() over () from t1 group by 1+2;
i row_number() over ()
2 1
select i, rank() over (order by i) rnk from t1 group by 1+2;
i rnk
2 1
drop table t1;
#
# MDEV-11907: window function as the second operand of division
#
create table t1 (pk int, c int);
insert into t1 values (1,1),(2,1),(3,1),(4,1),(5,2);
set @sql_mode_save= @@sql_mode;
set sql_mode='ERROR_FOR_DIVISION_BY_ZERO';
select pk, c, c/count(*) over
(partition by c order by pk
rows between 1 preceding and 2 following) as CNT
from t1;
pk c CNT
1 1 0.3333
2 1 0.2500
3 1 0.3333
4 1 0.5000
5 2 2.0000
show warnings;
Level Code Message
set sql_mode=@sql_mode_save;
drop table t1;
#
# MDEV-12336: several functions over a window function
#
create table t1 (name varchar(10), cnt int);
insert into t1 values ('Fred', 23), ('Fred', 35), ('Joe', 10);
select q.name, q.row_cnt,
round( 100 * ( q.row_cnt /
sum(q.row_cnt) over
(
order by q.name
rows between
unbounded preceding and
unbounded following
)
),2
) pct_of_total
from
(
select name, count(*) row_cnt, sum(cnt) sum_cnt
from t1
group by 1
) q;
name row_cnt pct_of_total
Fred 2 66.67
Joe 1 33.33
drop table t1;
#
# MDEV-11990: window function over min/max aggregation
#
create table t1 (id int);
insert into t1 values (1), (2), (3), (2), (4), (2);
select sum(max(id)) over (order by max(id)) from t1;
sum(max(id)) over (order by max(id))
4
explain
select sum(max(id)) over (order by max(id)) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using temporary
create index idx on t1(id);
select sum(max(id)) over (order by max(id)) from t1;
sum(max(id)) over (order by max(id))
4
explain
select sum(max(id)) over (order by max(id)) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
select sum(max(id)) over (order by max(id)) from t1 where id < 3;
sum(max(id)) over (order by max(id))
2
select count(max(id)) over (order by max(id)) from t1 where id < 3;
count(max(id)) over (order by max(id))
1
select max(id), rank() over (order by max(id)) from t1 where id < 3;
max(id) rank() over (order by max(id))
2 1
drop table t1;
#
# main.win failure post MDEV-12336
#
create table t(a decimal(35,10), b int);
insert into t values (1, 10), (2, 20), (3, 30);
prepare stmt from "SELECT (CASE WHEN sum(t.a) over (partition by t.b)=1 THEN 1000 ELSE 300 END) AS a FROM t";
execute stmt;
a
1000
300
300
drop table t;
#
# MDEV-12851 case with window functions query crashes server
#
create table t1(dt datetime);
insert into t1 values ('2017-05-17'), ('2017-05-18');
select dt,
case when (max(dt) over (order by dt rows between 1 following and 1 following) is null)
then '9999-12-31 12:00:00'
else max(dt) over (order by dt rows between 1 following and 1 following)
end x,
case when (max(dt) over (order by dt rows between 1 following and 1 following) is not null)
then '9999-12-31 12:00:00'
else max(dt) over (order by dt rows between 1 following and 1 following)
end x
from t1;
dt x x
2017-05-17 00:00:00 2017-05-18 00:00:00 9999-12-31 12:00:00
2017-05-18 00:00:00 9999-12-31 12:00:00 NULL
drop table t1;
create table t1(i int);
insert into t1 values (null),(1),(2);
select max(i) over (order by i),
max(i) over (order by i) is null,
max(i) over (order by i) is not null
from t1;
max(i) over (order by i) max(i) over (order by i) is null max(i) over (order by i) is not null
NULL 1 0
1 0 1
2 0 1
drop table t1;
#
# MDEV-13189: Window functions crash when using INTERVAL function
#
create table t1(i int);
insert into t1 values (1),(2),(10),(20),(30);
select sum(i) over (order by i), interval(sum(i) over (order by i), 10, 20)
from t1;
sum(i) over (order by i) interval(sum(i) over (order by i), 10, 20)
1 0
3 0
13 1
33 2
63 2
drop table t1;
#
# MDEV-13352: Server crashes in st_join_table::remove_duplicates
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (1),(2);
SELECT DISTINCT ROW_NUMBER() OVER(), i FROM t1 WHERE 0;
ROW_NUMBER() OVER() i
SELECT ROW_NUMBER() OVER(), i FROM t1 WHERE 0;
ROW_NUMBER() OVER() i
DROP TABLE t1;
#
# MDEV-13344: Server crashes in in AGGR_OP::put_record on subquery
# with window function and constant table
# (Testcase only)
#
CREATE TABLE t1 (c CHAR(8)) ENGINE=MyISAM;
INSERT IGNORE INTO t1 VALUES ('foo');
SELECT ('bar',1) IN ( SELECT c, ROW_NUMBER() OVER (PARTITION BY c) FROM t1);
('bar',1) IN ( SELECT c, ROW_NUMBER() OVER (PARTITION BY c) FROM t1)
0
DROP TABLE t1;
#
# MDEV-13351: Server crashes in st_select_lex::set_explain_type upon UNION with window function
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (1),(2);
SELECT Nth_value(i,1) OVER() FROM t1
UNION ALL
( SELECT Nth_value(i,2) OVER() FROM t1 LIMIT 0 )
;
Nth_value(i,1) OVER()
1
1
DROP TABLE t1;
#
# A regression after MDEV-13351:
# MDEV-13374 : Server crashes in first_linear_tab / st_select_lex::set_explain_type
# upon UNION with aggregate function
#
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);
SELECT i AS fld FROM t1 UNION SELECT COUNT(*) AS fld FROM t1;
fld
1
2
DROP TABLE t1;
#
# MDEV-13240 Wrong warning with MAX(datetime_field) OVER (...)
#
CREATE TABLE t1 (dt DATETIME);
INSERT INTO t1 VALUES ('2017-05-17');
SELECT MAX(dt) OVER (ORDER BY dt ROWS BETWEEN 1 FOLLOWING AND 1 FOLLOWING) FROM t1;
MAX(dt) OVER (ORDER BY dt ROWS BETWEEN 1 FOLLOWING AND 1 FOLLOWING)
NULL
DROP TABLE t1;
#
# MDEV-13358 FIRST_VALUE throws SQL Error (1292): Incorrect datetime value
#
CREATE TABLE IF NOT EXISTS `fv_test` (
`SOME_DATE` datetime NOT NULL
);
INSERT INTO `fv_test` (`SOME_DATE`) VALUES ('2017-07-20 12:47:56');
CREATE TABLE fv_result
SELECT
FIRST_VALUE(SOME_DATE) OVER(ORDER BY SOME_DATE DESC) AS somedate
FROM fv_test;
SHOW CREATE TABLE fv_result;
Table Create Table
fv_result CREATE TABLE `fv_result` (
`somedate` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM fv_result;
somedate
2017-07-20 12:47:56
DROP TABLE fv_test, fv_result;
#
# MDEV-13649: Server crashes in set_field_to_null_with_conversions or in Field::set_notnull
#
CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (0),(1),(2);
SELECT LEAD(a) OVER (PARTITION BY a ORDER BY a) as lead,
a AND LEAD(a) OVER (PARTITION BY a ORDER BY a) AS a_and_lead_part
FROM t1;
lead a_and_lead_part
NULL 0
NULL NULL
NULL NULL
SELECT a OR LEAD(a) OVER (ORDER BY a) AS a_or_lead_order
FROM t1
ORDER BY a;
a_or_lead_order
1
1
1
SELECT a AND LEAD(a) OVER (ORDER BY a) AS a_and_lead_order
FROM t1
ORDER BY a;
a_and_lead_order
0
1
NULL
SELECT a XOR LEAD(a) OVER (ORDER BY a) AS a_xor_lead_order
FROM t1
ORDER BY a;
a_xor_lead_order
1
0
NULL
SELECT NOT LEAD(a) OVER (ORDER BY a) AS not_lead_order
FROM t1
ORDER BY a;
not_lead_order
0
0
NULL
SELECT LEAD(a) OVER (ORDER BY a) is not null AS is_not_null_lead_order
FROM t1
ORDER BY a;
is_not_null_lead_order
1
1
0
drop table t1;
#
# MDEV-13354: Server crashes in find_field_in_tables upon PS with window function and subquery
#
CREATE TABLE t1 (i INT, a char);
INSERT INTO t1 VALUES (1, 'a'),(2, 'b');
PREPARE stmt FROM "SELECT row_number() over (partition by i order by i), i FROM (SELECT * from t1) as sq";
EXECUTE stmt;
row_number() over (partition by i order by i) i
1 1
1 2
DROP TABLE t1;
#
# MDEV-13384: "window" seems like a reserved column name but it's not listed as one
#
# Currently we allow window as an identifier, except for table aliases.
#
CREATE TABLE door (id INT, window VARCHAR(10));
SELECT id
FROM door as window;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'window' at line 2
SELECT id, window
FROM door;
id window
SELECT id, window
FROM door as window;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'window' at line 2
DROP TABLE door;
#
# MDEV-13352: Server crashes in st_join_table::remove_duplicates
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (1),(2);
SELECT DISTINCT ROW_NUMBER() OVER(), i FROM t1 WHERE 0;
ROW_NUMBER() OVER() i
SELECT ROW_NUMBER() OVER(), i FROM t1 WHERE 0;
ROW_NUMBER() OVER() i
DROP TABLE t1;
#
# MDEV-15853: Assertion `tab->filesort_result == 0' failed
#
CREATE TABLE t1 ( a1 int);
insert into t1 values (1),(2),(3);
CREATE TABLE t2 (b1 int, a1 int, a2 int);
insert into t2 values (1,2,3),(2,3,4),(3,4,5);
SELECT COUNT(DISTINCT t2.a2),
rank() OVER (ORDER BY t2.b1)
FROM t2 ,t1 GROUP BY t2.b1 ORDER BY t1.a1;
COUNT(DISTINCT t2.a2) rank() OVER (ORDER BY t2.b1)
1 1
1 2
1 3
DROP TABLE t1,t2;
#
# MDEV-16990: server crashes in base_list_iterator::next
#
CREATE TABLE t1(i int);
insert into t1 values (1),(2);
SELECT DISTINCT row_number() OVER (), MAX(1) FROM t1;
row_number() OVER () MAX(1)
1 1
SELECT DISTINCT BIT_AND(0) OVER (), MAX(1) FROM t1;
BIT_AND(0) OVER () MAX(1)
0 1
drop table t1;
#
# MDEV-17525: Window functions not working in ONLY_FULL_GROUP_BY mode
#
CREATE TABLE t1 (name CHAR(10), test CHAR(10), score TINYINT);
INSERT INTO t1 VALUES
('Chun', 'SQL', 75), ('Chun', 'Tuning', 73),
('Esben', 'SQL', 43), ('Esben', 'Tuning', 31),
('Kaolin', 'SQL', 56), ('Kaolin', 'Tuning', 88),
('Tatiana', 'SQL', 87), ('Tatiana', 'Tuning', 83);
SET @save_sql_mode= @@sql_mode;
SET sql_mode = 'ONLY_FULL_GROUP_BY';
SELECT name, test, score,
AVG(score) OVER (PARTITION BY test) AS average_by_test
FROM t1
ORDER BY test, name;
name test score average_by_test
Chun SQL 75 65.2500
Esben SQL 43 65.2500
Kaolin SQL 56 65.2500
Tatiana SQL 87 65.2500
Chun Tuning 73 68.7500
Esben Tuning 31 68.7500
Kaolin Tuning 88 68.7500
Tatiana Tuning 83 68.7500
set @@sql_mode= @save_sql_mode;
SELECT name, test, score,
AVG(score) OVER (PARTITION BY test) AS average_by_test
FROM t1
ORDER BY test, name;
name test score average_by_test
Chun SQL 75 65.2500
Esben SQL 43 65.2500
Kaolin SQL 56 65.2500
Tatiana SQL 87 65.2500
Chun Tuning 73 68.7500
Esben Tuning 31 68.7500
Kaolin Tuning 88 68.7500
Tatiana Tuning 83 68.7500
drop table t1;
#
# MDEV-12575: Server crash in AGGR_OP::put_record or in JOIN_CACHE::free
# or Invalid write in JOIN::make_aggr_tables_info
#
SELECT DISTINCT BIT_OR(100) OVER () FROM dual
GROUP BY LEFT('2018-08-24', 100) order by 1+2;
BIT_OR(100) OVER ()
100
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (1),(2);
SELECT * FROM (
SELECT
ROW_NUMBER() OVER(), i, sum(i)
FROM t1
WHERE 1=0
limit 0
) AS sq;
ROW_NUMBER() OVER() i sum(i)
SELECT * FROM (
SELECT
ROW_NUMBER() OVER(), i, sum(i)
FROM t1
WHERE 1=0
GROUP BY i
) AS sq;
ROW_NUMBER() OVER() i sum(i)
drop table t1;
create table t1 (a int);
explain
select distinct 1, row_number() over (order by 1) from t1 where a=0 group by a with rollup;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
select distinct 1, row_number() over (order by 1) from t1 where a=0 group by a with rollup;
1 row_number() over (order by 1)
drop table t1;
explain
SELECT DISTINCT BIT_OR(100) OVER () FROM dual
GROUP BY LEFT('2018-08-24', 100) WITH ROLLUP
HAVING @A := 'qwerty';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
SELECT DISTINCT BIT_OR(100) OVER () FROM dual
GROUP BY LEFT('2018-08-24', 100) WITH ROLLUP
HAVING @A := 'qwerty';
BIT_OR(100) OVER ()
explain
SELECT DISTINCT BIT_OR(100) OVER () FROM dual
GROUP BY LEFT('2018-08-24', 100)
HAVING @A := 'qwerty';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
SELECT DISTINCT BIT_OR(100) OVER () FROM dual
GROUP BY LEFT('2018-08-24', 100)
HAVING @A := 'qwerty';
BIT_OR(100) OVER ()
create table t1 (a int);
explain
SELECT DISTINCT BIT_OR(100) OVER () FROM t1
GROUP BY LEFT('2018-08-24', 100) having 1=1 limit 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Zero limit
drop table t1;
#
# MDEV-13170: Database service (MySQL) stops after update with trigger
#
CREATE TABLE t1 ( t1_id int, point_id int, ml_id int, UNIQUE KEY t1_ml_u (ml_id,point_id)) ;
INSERT INTO t1 VALUES (1,1,8884),(2,1,8885);
CREATE TABLE t2 ( db_time datetime, au_nr int, col_id int, new_val int);
CREATE TABLE t3 (id1 int, id2 int, d1 int);
CREATE TRIGGER t1_aurtrg AFTER UPDATE ON t1 FOR EACH ROW begin
CREATE OR REPLACE TEMPORARY TABLE trg_u AS
WITH l AS
(SELECT a.*,
Max(t2.col_id) over (PARTITION BY a.d1),
Max(t2.new_val) over (PARTITION BY a.d1)
FROM
(SELECT d1 , id1, id2 FROM t3) a
JOIN t2 ON (a.d1=t2.db_time AND a.id1=t2.au_nr))
SELECT 1;
END;//
update t1 set ml_id=8884 where point_id=1;
ERROR 23000: Duplicate entry '8884-1' for key 't1_ml_u'
update t1 set ml_id=8884 where point_id=1;
ERROR 23000: Duplicate entry '8884-1' for key 't1_ml_u'
drop table t1, t2,t3;
CREATE TABLE t1 (i INT, a char);
INSERT INTO t1 VALUES (1, 'a'),(2, 'b');
create view v1 as select * from t1;
PREPARE stmt FROM "SELECT i, row_number() over (partition by i order by i) FROM v1";
execute stmt;
i row_number() over (partition by i order by i)
1 1
2 1
deallocate prepare stmt;
drop table t1;
drop view v1;
#
# MDEV-17676: Assertion `inited==NONE || (inited==RND && scan)' failed in handler::ha_rnd_init
#
CREATE TABLE t1 (b1 text NOT NULL);
INSERT INTO t1 VALUES ('2'),('1');
EXPLAIN
SELECT DISTINCT MIN(b1) OVER () FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using temporary
SELECT DISTINCT MIN(b1) OVER () FROM t1;
MIN(b1) OVER ()
1
drop table t1;
#
# MDEV-15424: Unreasonal SQL Error (1356) on select from view
#
create table t1 (id int, n1 int);
insert into t1 values (1,1), (2,1), (3,2), (4,4);
create view v1 as SELECT ifnull(max(n1) over (partition by n1),'aaa') FROM t1;
explain select * from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4
2 DERIVED t1 ALL NULL NULL NULL NULL 4 Using temporary
select * from v1;
ifnull(max(n1) over (partition by n1),'aaa')
1
1
2
4
drop table t1;
drop view v1;
#
# MDEV-18431: Select max + row_number giving incorrect result
#
create table t1 (id int, v int);
insert into t1 values (1, 1), (1,2), (1,3), (2, 1), (2, 2);
select e.id,
(select max(t1.v) from t1 where t1.id=e.id) as a,
row_number() over (partition by e.id order by e.v) as b,
(select max(t1.v) from t1 where t1.id=e.id) + (row_number() over (partition by e.id order by e.v)) as sum_a_b
from t1 e;
id a b sum_a_b
1 3 1 4
1 3 2 5
1 3 3 6
2 2 1 3
2 2 2 4
drop table t1;
#
# MDEV-15837: Assertion `item1->type() == Item::FIELD_ITEM && item2->type() == Item::FIELD_ITEM'
# failed in compare_order_elements function
#
CREATE TABLE t1 (a1 int);
insert into t1 values (1),(2),(3);
SELECT rank() OVER (ORDER BY 1), ROW_NUMBER() OVER (ORDER BY (EXPORT_SET(5,'Y','N',',',4))) FROM t1;
rank() OVER (ORDER BY 1) ROW_NUMBER() OVER (ORDER BY (EXPORT_SET(5,'Y','N',',',4)))
1 1
1 2
1 3
drop table t1;
#
# MDEV-17781: Server crashes in next_linear_tab
#
CREATE TABLE t1 (i1 int);
explain
(SELECT AVG(0) OVER (), MAX('2') FROM t1)
UNION ALL
(SELECT AVG(0) OVER (), MAX('2') FROM t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
(SELECT AVG(0) OVER (), MAX('2') FROM t1)
UNION ALL
(SELECT AVG(0) OVER (), MAX('2') FROM t1);
AVG(0) OVER () MAX('2')
0.0000 NULL
0.0000 NULL
drop table t1;
#
# MDEV-14791: Crash with order by expression containing window functions
#
CREATE TABLE t1 (b1 int, b2 int);
INSERT INTO t1 VALUES (1,1),(0,0);
explain
SELECT b1 from t1 order by row_number() over (ORDER BY b2) + 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
SELECT b1 from t1 order by row_number() over (ORDER BY b2) + 1;
b1
0
1
explain
SELECT b1 from t1 order by row_number() over (ORDER BY b2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
SELECT b1 from t1 order by row_number() over (ORDER BY b2);
b1
0
1
DROP TABLE t1;
CREATE TABLE t1 (a int, b int, c int);
INSERT INTO t1 VALUES (2,3,207), (1,21,909), (7,13,312), (8,64,248);
explain
SELECT * FROM t1 ORDER BY max(t1.a) over (partition by c);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort
SELECT * FROM t1 ORDER BY max(t1.a) over (partition by c);
a b c
1 21 909
2 3 207
7 13 312
8 64 248
explain
SELECT max(t1.a) over (partition by c) as x, b, c from t1 order by max(t1.a) over (partition by c);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort
SELECT max(t1.a) over (partition by c) as x, b, c from t1 order by max(t1.a) over (partition by c);
x b c
1 21 909
2 3 207
7 13 312
8 64 248
drop table t1;
#
# MDEV-18373: DENSE_RANK is not calculated correctly
#
create table t1 (a int, b int);
insert into t1 values (60, 1515),(60, 2000),(70, 2000),(55, 1600);
select b, dense_rank() over (order by sum(a)) from t1 group by b;
b dense_rank() over (order by sum(a))
1515 2
1600 1
2000 3
select b, dense_rank() over (order by sum(a)+1) from t1 group by b;
b dense_rank() over (order by sum(a)+1)
1515 2
1600 1
2000 3
select b, row_number() over (partition by sum(a)) from t1 group by b;
b row_number() over (partition by sum(a))
1515 1
1600 1
2000 1
select b, row_number() over (partition by sum(a)+1) from t1 group by b;
b row_number() over (partition by sum(a)+1)
1515 1
1600 1
2000 1
drop table t1;
#
# MDEV-18015: Assertion `global_status_var.global_memory_used == 0' failed when using UDF,
# window functions and views
#
create table t1 (id int, n1 int);
insert into t1 values (1,1),(2,1),(3,2),(4,4);
explain
select max(n1) over (partition by 'abc') from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary
select max(n1) over (partition by 'abc') from t1;
max(n1) over (partition by 'abc')
4
4
4
4
explain
select rank() over (partition by 'abc' order by 'xyz') from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary
select rank() over (partition by 'abc' order by 'xyz') from t1;
rank() over (partition by 'abc' order by 'xyz')
1
1
1
1
drop table t1;
#
# MDEV-19380: ASAN heap-use-after-free in Protocol::net_store_data
#
CREATE TABLE t1 (i int);
INSERT INTO t1 VALUES (1),(2),(3);
SELECT (SELECT MIN('foo') OVER() FROM t1 LIMIT 1) as x;
x
foo
drop table t1;
#
# MDEV-16579: Wrong result of query using DISTINCT COUNT(*) OVER (*)
#
CREATE TABLE t1 (i int) ;
INSERT INTO t1 VALUES (1),(0),(1),(2),(0),(1),(2),(1),(2);
SELECT DISTINCT COUNT(*) OVER (), MOD(MIN(i),2) FROM t1 GROUP BY i ;
COUNT(*) OVER () MOD(MIN(i),2)
3 0
3 1
drop table t1;
#
# MDEV-21318: Wrong results with window functions and implicit grouping
#
CREATE TABLE t1 (a INT);
#
# With empty const table
# The expected result here is 1, NULL
#
explain
SELECT row_number() over(), sum(1) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 0 const row not found; Using temporary
SELECT row_number() over(), sum(1) FROM t1;
row_number() over() sum(1)
1 NULL
insert into t1 values (2);
#
# Const table has 1 row, but still impossible where
# The expected result here is 1, NULL
#
EXPLAIN SELECT row_number() over(), sum(1) FROM t1 where a=1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
SELECT row_number() over(), sum(1) FROM t1 where a=1;
row_number() over() sum(1)
1 NULL
#
# Impossible HAVING
# Empty result is expected
#
EXPLAIN SELECT row_number() over(), sum(1) FROM t1 where a=1 having 1=0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
SELECT row_number() over(), sum(1) FROM t1 where a=1 having 1=0;
row_number() over() sum(1)
#
# const table has 1 row, no impossible where
# The expected result here is 1, 2
#
EXPLAIN SELECT row_number() over(), sum(a) FROM t1 where a=2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 Using temporary
SELECT row_number() over(), sum(a) FROM t1 where a=2;
row_number() over() sum(a)
1 2
drop table t1;
#
# Impossible Where
#
create table t1(a int);
insert into t1 values (1);
#
# Expected result is NULL, 0, NULL
#
EXPLAIN SELECT MAX(a) OVER (), COUNT(a), abs(a) FROM t1 WHERE FALSE;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
SELECT MAX(a) OVER (), COUNT(a), abs(a) FROM t1 WHERE FALSE;
MAX(a) OVER () COUNT(a) abs(a)
NULL 0 NULL
#
# Expected result is 1, 0, NULL
#
EXPLAIN
SELECT MAX(1) OVER (), COUNT(a), abs(a) FROM t1 WHERE FALSE;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
SELECT MAX(1) OVER (), COUNT(a), abs(a) FROM t1 WHERE FALSE;
MAX(1) OVER () COUNT(a) abs(a)
1 0 NULL
drop table t1;
#
# MDEV-22461: JOIN::make_aggr_tables_info(): Assertion `select_options & (1ULL << 17)' failed.
#
CREATE TEMPORARY TABLE t0 (a INT PRIMARY KEY ) ;
INSERT INTO t0 VALUES (1),(2),(3);
SELECT a FROM t0
WHERE a < 8
GROUP BY 1.5
WINDOW v2 AS ( PARTITION BY a ORDER BY a DESC );
a
1
SELECT a, ROW_NUMBER() OVER v2
FROM t0
WHERE a < 8
GROUP BY 1.5
WINDOW v2 AS ( PARTITION BY a ORDER BY a DESC );
a ROW_NUMBER() OVER v2
1 1
drop table t0;
#
# MDEV-16230:Server crashes when Analyze format=json is run with a window function with
# empty PARTITION BY and ORDER BY clauses
#
CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1,1),(2,2),(3,3);
ANALYZE FORMAT=JSON SELECT row_number() OVER() FROM t1;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"window_functions_computation": {
"sorts": {
"filesort": {
"sort_key": "`row_number() OVER()`",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"r_used_priority_queue": false,
"r_output_rows": 3,
"r_buffer_size": "REPLACED"
}
},
"temporary_table": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
}
}
}
SELECT row_number() OVER() FROM t1;
row_number() OVER()
1
2
3
DROP TABLE t1;
#
# MDEV-22984: Throw an error when arguments to window functions are window functions
#
CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1,1), (2,2), (3,3);
SELECT NTILE(MAX(a) OVER (PARTITION BY a)) OVER (PARTITION BY a ORDER BY b) FROM t1;
ERROR HY000: Window functions can not be used as arguments to group functions.
SELECT FIRST_VALUE(MAX(a) OVER (PARTITION BY a)) OVER (ORDER BY a) AS x FROM t1 GROUP BY a;
ERROR HY000: Window functions can not be used as arguments to group functions.
DROP TABLE t1;
#
# MDEV-12059: Assertion `precision > 0' failed with a window function or window aggregate function
#
CREATE TABLE t1 (d DECIMAL(1,0) UNSIGNED);
INSERT INTO t1 VALUES (1),(2);
SELECT MIN(d) OVER () FROM t1;
MIN(d) OVER ()
1
1
DROP TABLE t1;
#
# MDEV-22463: Element_type &Bounds_checked_array<Item *>::operator[](size_t) [Element_type = Item *]:
# Assertion `n < m_size' failed
#
CREATE TABLE t1 (a INT, b INT, c INT, d INT, e INT, f INT, g int, h INT, i INT);
INSERT INTO t1 SELECT seq,seq,seq,seq, seq,seq,seq,seq,seq FROM seq_1_to_5;
SELECT ROW_NUMBER() OVER w2 FROM t1 WINDOW w2 AS (PARTITION BY -1,0,1,2,3,4,5,6);
ROW_NUMBER() OVER w2
1
2
3
4
5
SELECT a FROM t1 ORDER BY ROW_NUMBER() OVER (PARTITION BY -1,1,0,2,3,4,5,6,7,8);
a
1
2
3
4
5
SELECT a,b FROM t1 WINDOW w2 AS (PARTITION BY -1,1,0,2,3,4);
a b
1 1
2 2
3 3
4 4
5 5
SELECT ROW_NUMBER() OVER w2 FROM t1 WINDOW w2 AS (PARTITION BY -1,0,1,2,3,4,5,6);
ROW_NUMBER() OVER w2
1
2
3
4
5
DROP TABLE t1;
#
# MDEV-18916: crash in Window_spec::print_partition() with decimals
#
SELECT cast((rank() over w1) as decimal (53,56));
ERROR 42000: Too big scale 56 specified for 'rank() over w1'. Maximum is 38
SELECT cast((rank() over w1) as decimal (53,30));
ERROR HY000: Window specification with name 'w1' is not defined
#
# MDEV-15180: server crashed with NTH_VALUE()
#
CREATE TABLE t1 (i1 int, a int);
INSERT INTO t1 VALUES (1, 1), (2, 2),(3, 3);
CREATE TABLE t2 (i2 int);
INSERT INTO t2 VALUES (1),(2),(5),(1),(7),(4),(3);
CREATE VIEW v1 AS (SELECT * FROM t1,t2 WHERE t1.i1=t2.i2) ;
SELECT NTH_VALUE(i1, i1) OVER (PARTITION BY i1) FROM v1;
NTH_VALUE(i1, i1) OVER (PARTITION BY i1)
1
1
NULL
NULL
DROP VIEW v1;
DROP TABLE t1,t2;
#
# End of 10.2 tests
#
#
# MDEV-23867: select crash in compute_window_func
#
set @save_sort_buffer_size=@@sort_buffer_size;
set sort_buffer_size= 2000;
CREATE TABLE t1( a INT, b INT, c INT);
INSERT INTO t1 select seq, seq, seq from seq_1_to_5000;
CREATE TABLE t2( a INT, b INT, c INT);
INSERT INTO t2 SELECT a, b, ROW_NUMBER() OVER (PARTITION BY b) FROM t1;
SELECT COUNT(*), MAX(c) FROM t2;
COUNT(*) MAX(c)
5000 1
CREATE TABLE t3( a INT, b INT, c INT);
INSERT INTO t3 SELECT a, b, SUM(a) OVER () FROM t1;
SELECT COUNT(*), MAX(c) FROM t3;
COUNT(*) MAX(c)
5000 12502500
set @@sort_buffer_size=@save_sort_buffer_size;
DROP TABLE t1,t2,t3;
# end of 10.2 test
mysql-test/suite/encryption/t/tempfiles_encrypted.test 0 → 100644
View file @ b94e8e4b
--echo #
--echo # Tests when the temporary files are encrypted
--echo #
source include/have_file_key_management_plugin.inc;
source include/have_sequence.inc;
source include/have_innodb.inc;
select @@encrypt_tmp_files;
--source t/win.test
--echo #
--echo # MDEV-23867: select crash in compute_window_func
--echo #
set @save_sort_buffer_size=@@sort_buffer_size;
set sort_buffer_size= 2000;
CREATE TABLE t1( a INT, b INT, c INT);
INSERT INTO t1 select seq, seq, seq from seq_1_to_5000;
CREATE TABLE t2( a INT, b INT, c INT);
INSERT INTO t2 SELECT a, b, ROW_NUMBER() OVER (PARTITION BY b) FROM t1;
SELECT COUNT(*), MAX(c) FROM t2;
CREATE TABLE t3( a INT, b INT, c INT);
INSERT INTO t3 SELECT a, b, SUM(a) OVER () FROM t1;
SELECT COUNT(*), MAX(c) FROM t3;
set @@sort_buffer_size=@save_sort_buffer_size;
DROP TABLE t1,t2,t3;
--echo # end of 10.2 test
mysys/mf_iocache.c
View file @ b94e8e4b
......@@ -250,7 +250,7 @@ int init_io_cache(IO_CACHE *info, File file, size_t cachesize,
info->write_buffer= info->buffer + cachesize;
else
info->write_buffer= info->buffer;
info->alloced_buffer= 1;
info->alloced_buffer= buffer_block;
break; /* Enough memory found */
}
if (cachesize == min_cache)
......@@ -324,14 +324,14 @@ int init_slave_io_cache(IO_CACHE *master, IO_CACHE *slave)
DBUG_ASSERT(!master->share);
DBUG_ASSERT(master->alloced_buffer);
if (!(slave_buf= (uchar*)my_malloc(master->buffer_length, MYF(0))))
if (!(slave_buf= (uchar*)my_malloc(master->alloced_buffer, MYF(0))))
{
return 1;
}
memcpy(slave, master, sizeof(IO_CACHE));
slave->buffer= slave_buf;
memcpy(slave->buffer, master->buffer, master->buffer_length);
memcpy(slave->buffer, master->buffer, master->alloced_buffer);
slave->read_pos= slave->buffer + (master->read_pos - master->buffer);
slave->read_end= slave->buffer + (master->read_end - master->buffer);
......
sql/mf_iocache_encr.cc
View file @ b94e8e4b
......@@ -71,6 +71,16 @@ static int my_b_encr_read(IO_CACHE *info, uchar *Buffer, size_t Count)
DBUG_RETURN(1);
}
info->seek_not_done= 0;
if (info->next_file_user)
{
IO_CACHE *c;
for (c= info->next_file_user;
c!= info;
c= c->next_file_user)
{
c->seek_not_done= 1;
}
}
}
do
......
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