win.result

drop table if exists t1,t2;
# ########################################################################
# # 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	10	zz	3
2	20	yy	2
3	10	xxx	2
3	20	vvv	1
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;
pk	a	b	row_number() over (order by a)	row_number() over (order by b)
1	10	22	1	5
2	11	21	2	4
3	12	20	3	3
4	13	19	4	2
5	14	18	5	1
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
2	0	1
3	1	3
4	1	3
8	2	5
5	2	5
6	2	5
7	2	5
9	4	9
10	4	9
select pk, a, rank() over (order by a desc) from t2;
pk	a	rank() over (order by a desc)
1	0	9
2	0	9
3	1	7
4	1	7
8	2	3
5	2	3
6	2	3
7	2	3
9	4	1
10	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
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;
#
# 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 
pk, 
val,
count(val) over (order by val 
range between current row and 
current row) 
as CNT
from t3;
pk	val	CNT
0	1	3
1	1	3
2	1	3
3	2	4
4	2	4
5	2	4
6	2	4
insert into t3 values 
(7, 3),
(8, 3);
select 
pk, 
val,
count(val) over (order by val 
range between current row and 
current row) 
as CNT
from t3;
pk	val	CNT
0	1	3
1	1	3
2	1	3
3	2	4
4	2	4
5	2	4
6	2	4
7	3	2
8	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,
pk, 
val,
count(val) over (partition by part_id
order by val 
range between current row and 
current row) 
as CNT
from t4;
part_id	pk	val	CNT
1234	100	1	3
1234	101	1	3
1234	102	1	3
1234	103	2	4
1234	104	2	4
1234	105	2	4
1234	106	2	4
1234	107	3	2
1234	108	3	2
5678	200	1	3
5678	201	1	3
5678	202	1	3
5678	203	2	4
5678	204	2	4
5678	205	2	4
5678	206	2	4
5678	207	3	2
5678	208	3	2
#
# Try RANGE UNBOUNDED PRECEDING | FOLLOWING
#
select 
part_id,
pk, 
val,
count(val) over (partition by part_id
order by val 
range between unbounded preceding and 
current row) 
as CNT
from t4;
part_id	pk	val	CNT
1234	100	1	3
1234	101	1	3
1234	102	1	3
1234	103	2	7
1234	104	2	7
1234	105	2	7
1234	106	2	7
1234	107	3	9
1234	108	3	9
5678	200	1	3
5678	201	1	3
5678	202	1	3
5678	203	2	7
5678	204	2	7
5678	205	2	7
5678	206	2	7
5678	207	3	9
5678	208	3	9
select 
part_id,
pk, 
val,
count(val) over (partition by part_id
order by val 
range between current row and 
unbounded following) 
as CNT
from t4;
part_id	pk	val	CNT
1234	100	1	9
1234	101	1	9
1234	102	1	9
1234	103	2	6
1234	104	2	6
1234	105	2	6
1234	106	2	6
1234	107	3	2
1234	108	3	2
5678	200	1	9
5678	201	1	9
5678	202	1	9
5678	203	2	6
5678	204	2	6
5678	205	2	6
5678	206	2	6
5678	207	3	2
5678	208	3	2
select 
part_id,
pk, 
val,
count(val) over (partition by part_id
order by val 
range between unbounded preceding and 
unbounded following) 
as CNT
from t4;
part_id	pk	val	CNT
1234	100	1	9
1234	101	1	9
1234	102	1	9
1234	103	2	9
1234	104	2	9
1234	105	2	9
1234	106	2	9
1234	107	3	9
1234	108	3	9
5678	200	1	9
5678	201	1	9
5678	202	1	9
5678	203	2	9
5678	204	2	9
5678	205	2	9
5678	206	2	9
5678	207	3	9
5678	208	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
1	1	9
2	2	9
3	4	9
4	8	9
5	26	5
6	27	5
7	40	3
8	71	2
9	72	2
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
1	1	5
2	2	5
3	4	5
4	8	5
5	26	3
6	27	3
7	40	2
8	71	0
9	72	0
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
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
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
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
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;
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,
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": "X",
      "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 
rank() over (order by a) -
rank() over (order by b)
from
t1;
rank() over (order by a) -
rank() over (order by b)
0
0
0
drop table t1;
#
# MDEV-9894: Assertion `0' failed in Window_func_runner::setup
#  return ER_NOT_SUPPORTED_YET for aggregates that are not yet supported
#  as window functions.
#
create table t1 (i int);
insert into t1 values (1),(2);
SELECT MAX(i) OVER (PARTITION BY (i)) FROM t1;
ERROR 42000: This version of MariaDB doesn't yet support 'This aggregate as window function'
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	a	3	0.8333333333
NULL	NULL	1	0.1666666667
3	NULL	5	0.5000000000
4	a	6	0.3333333333
2	b	4	0.6666666667
-1		2	1.0000000000
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;