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mariadb/mysql-test/t/win.test
Galina Shalygina be1d06c8a5 Merge branch '10.2' into 10.2-mdev9864
2016-05-08 23:04:41 +03:00

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#
# Window Functions Tests
#
--disable_warnings
drop table if exists t1,t2;
drop view if exists v1;
--enable_warnings
--echo # ########################################################################
--echo # # Parser tests
--echo # ########################################################################
--echo #
--echo # 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);
--error ER_PARSE_ERROR
select row_number() from t1;
--error ER_PARSE_ERROR
select rank() from t1;
--echo # Attempt to use window function in the WHERE clause
--error ER_WRONG_PLACEMENT_OF_WINDOW_FUNCTION
select * from t1 where 1=rank() over (order by a);
--error ER_WRONG_PLACEMENT_OF_WINDOW_FUNCTION
select * from t1 where 1>row_number() over (partition by b order by a);
drop table t1;
--echo # ########################################################################
--echo # # Functionality tests
--echo # ########################################################################
--echo #
--echo # 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');
--sorted_result
select a, row_number() over (partition by a order by b) from t1;
select a, b, x, row_number() over (partition by a order by x) from t1;
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;
drop table t1;
--echo #
--echo # Try RANK() function
--echo #
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;
select pk, a, rank() over (order by a desc) from t2;
drop table t2;
--echo #
--echo # Try Aggregates as window functions. With frames.
--echo #
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;
select
pk, c,
count(*) over (partition by c order by pk
rows between 2 preceding and 2 following) as CNT
from t1;
select
pk, c,
count(*) over (partition by c order by pk
rows between 1 preceding and 2 following) as CNT
from t1;
select
pk, c,
count(*) over (partition by c order by pk
rows between 2 preceding and current row) as CNT
from t1;
select
pk,c,
count(*) over (partition by c order by pk rows
between 1 following and 2 following) as CNT
from t1;
select
pk,c,
count(*) over (partition by c order by pk rows
between 2 preceding and 1 preceding) as CNT
from t1;
select
pk, c,
count(*) over (partition by c order by pk
rows between current row and 1 following) as CNT
from t1;
--echo # 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;
drop table t0,t1;
--echo #
--echo # Resolution of window names
--echo #
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;
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);
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);
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);
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);
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);
--error ER_WRONG_WINDOW_SPEC_NAME
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 ER_DUP_WINDOW_NAME
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 ER_WRONG_WINDOW_SPEC_NAME
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 ER_PARTITION_LIST_IN_REFERENCING_WINDOW_SPEC
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 ER_ORDER_LIST_IN_REFERENCING_WINDOW_SPEC
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 ER_WINDOW_FRAME_IN_REFERENCED_WINDOW_SPEC
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 ER_BAD_COMBINATION_OF_WINDOW_FRAME_BOUND_SPECS
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 ER_BAD_COMBINATION_OF_WINDOW_FRAME_BOUND_SPECS
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 ER_BAD_COMBINATION_OF_WINDOW_FRAME_BOUND_SPECS
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 ER_BAD_COMBINATION_OF_WINDOW_FRAME_BOUND_SPECS
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 ER_WRONG_PLACEMENT_OF_WINDOW_FUNCTION
select
pk, c
from t1 where rank() over w1 > 2
window w1 as (partition by c order by pk);
--error ER_WRONG_PLACEMENT_OF_WINDOW_FUNCTION
select
c, max(pk) as m
from t1
group by c + rank() over w1
window w1 as (order by m);
--error ER_WRONG_PLACEMENT_OF_WINDOW_FUNCTION
select
c, max(pk) as m, rank() over w1 as r
from t1
group by c+r
window w1 as (order by m);
--error ER_WRONG_PLACEMENT_OF_WINDOW_FUNCTION
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 ER_WINDOW_FUNCTION_IN_WINDOW_SPEC
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 ER_WINDOW_FUNCTION_IN_WINDOW_SPEC
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 ER_WINDOW_FUNCTION_IN_WINDOW_SPEC
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 ER_NOT_ALLOWED_WINDOW_FRAME
select
pk, c,
row_number() over (partition by c order by pk
range between unbounded preceding and current row) as r
from t1;
--error ER_NOT_ALLOWED_WINDOW_FRAME
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 ER_NOT_ALLOWED_WINDOW_FRAME
select
pk, c,
dense_rank() over (partition by c order by pk
rows between 1 preceding and 1 following) as r
from t1;
--error ER_NO_ORDER_LIST_IN_WINDOW_SPEC
select
pk, c,
rank() over w1 as r
from t1
window w1 as (partition by c);
--error ER_NO_ORDER_LIST_IN_WINDOW_SPEC
select
pk, c,
dense_rank() over (partition by c) as r
from t1;
drop table t0,t1;
--echo #
--echo # MDEV-9634: Window function produces incorrect value
--echo #
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;
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;
drop table t0, t2;
--echo #
--echo # RANGE-type bounds
--echo #
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;
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;
drop table t3;
--echo # 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;
--echo #
--echo # Try RANGE UNBOUNDED PRECEDING | FOLLOWING
--echo #
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;
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;
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;
drop table t4;
--echo #
--echo # MDEV-9695: Wrong window frame when using RANGE BETWEEN N FOLLOWING AND PRECEDING
--echo #
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;
--echo # 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;
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;
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;
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;
--echo # 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;
drop table t2;
--echo #
--echo # Try RANGE PRECEDING|FOLLWING n
--echo #
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;
select
pk, a,
count(a) over (ORDER BY a DESC
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 FOLLOWING) as cnt
from t1;
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 1 FOLLOWING) as cnt
from t1;
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 PRECEDING) as cnt
from t1;
select
pk, a,
count(a) over (ORDER BY a DESC
RANGE BETWEEN UNBOUNDED PRECEDING
AND 10 PRECEDING) as cnt
from t1;
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 1 PRECEDING) as cnt
from t1;
# Try bottom bound
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN 1 PRECEDING
AND CURRENT ROW) as cnt
from t1;
select
pk, a,
count(a) over (ORDER BY a DESC
RANGE BETWEEN 1 PRECEDING
AND CURRENT ROW) as cnt
from t1;
select
pk, a,
count(a) over (ORDER BY a
RANGE BETWEEN 1 FOLLOWING
AND 3 FOLLOWING) as cnt
from t1;
--echo # 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;
select
pk, a,
count(a) over (order by a desc
range between current row
and 1 following) as cnt
from t1;
# Try with partitions
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;
select
pk, a,
count(a) over (PARTITION BY part_id
ORDER BY a
RANGE BETWEEN UNBOUNDED PRECEDING
AND 1 PRECEDING) as cnt
from t1;
drop table t1;
--echo # 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;
drop table t1;
--echo #
--echo # RANGE-type frames and NULL values
--echo #
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;
drop table t1;
--echo #
--echo # Try ranges that have bound1 > bound2. The standard actually allows them
--echo #
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;
select
pk, c,
count(*) over (partition by c
order by pk
rows between 1 preceding
and 2 preceding)
as cnt
from t1;
select
pk, c,
count(*) over (partition by c
order by pk
range between 1 preceding
and 2 preceding)
as cnt
from t1;
drop table t0, t1;
--echo #
--echo # Error checking for frame bounds
--echo #
create table t1 (a int, b int, c varchar(32));
insert into t1 values (1,1,'foo');
insert into t1 values (2,2,'bar');
--error ER_RANGE_FRAME_NEEDS_SIMPLE_ORDERBY
select
count(*) over (order by a,b
range between unbounded preceding and current row)
from t1;
--error ER_WRONG_TYPE_FOR_RANGE_FRAME
select
count(*) over (order by c
range between unbounded preceding and current row)
from t1;
--error ER_WRONG_TYPE_FOR_RANGE_FRAME
select
count(*) over (order by a
range between 'abcd' preceding and current row)
from t1;
--error ER_WRONG_TYPE_FOR_RANGE_FRAME
select
count(*) over (order by a
range between current row and 'foo' following)
from t1;
--echo # Try range frame with invalid bounds
--error ER_WRONG_TYPE_FOR_ROWS_FRAME
select
count(*) over (order by a
rows between 0.5 preceding and current row)
from t1;
--error ER_WRONG_TYPE_FOR_ROWS_FRAME
select
count(*) over (order by a
rows between current row and 3.14 following)
from t1;
--echo #
--echo # EXCLUDE clause is parsed but not supported
--echo #
--error ER_FRAME_EXCLUSION_NOT_SUPPORTED
select
count(*) over (order by a
rows between 1 preceding and 1 following
exclude current row)
from t1;
--error ER_FRAME_EXCLUSION_NOT_SUPPORTED
select
count(*) over (order by a
range between 1 preceding and 1 following
exclude ties)
from t1;
--error ER_FRAME_EXCLUSION_NOT_SUPPORTED
select
count(*) over (order by a
range between 1 preceding and 1 following
exclude group)
from t1;
# EXCLUDE NO OTHERS means 'don't exclude anything'
select
count(*) over (order by a
rows between 1 preceding and 1 following
exclude no others)
from t1;
drop table t1;
--echo #
--echo # Window function in grouping query
--echo #
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;
drop table t1;
--echo #
--echo # mdev-9719: Window function in prepared statement
--echo #
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';
--sorted_result
execute stmt;
drop table t1;
--echo #
--echo # mdev-9754: Window name resolution in prepared statement
--echo #
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;
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;
drop table t0,t1;
--echo #
--echo # EXPLAIN FORMAT=JSON support for window functions
--echo #
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;
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 format=json
select
a,
rank() over (order by sum(b))
from t1
group by a
order by null;
--echo #
--echo # Check how window function works together with GROUP BY and HAVING
--echo #
select b,max(a) as MX, rank() over (order by b) from t1 group by b having MX in (3,5,7);
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);
drop table t1;
drop table t0;
--echo #
--echo # Building ordering index for window functions
--echo #
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);
--sorted_result
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);
drop table t1;
--echo #
--echo # MDEV-9848: Window functions: reuse sorting and/or scanning
--echo #
create table t1 (a int, b int, c int);
insert into t1 values
(1,3,1),
(2,2,1),
(3,1,1);
--echo # Check using counters
flush status;
select
rank() over (partition by c order by a),
rank() over (partition by c order by b)
from t1;
show status like '%sort%';
flush status;
select
rank() over (partition by c order by a),
rank() over (partition by c order by a)
from t1;
show status like '%sort%';
# Check using EXPLAIN FORMAT=JSON
explain format=json
select
rank() over (partition by c order by a),
rank() over (partition by c order by a)
from t1;
explain format=json
select
rank() over (order by a),
row_number() over (order by a)
from t1;
explain format=json
select
rank() over (partition by c order by a),
count(*) over (partition by c)
from t1;
explain format=json
select
count(*) over (partition by c),
rank() over (partition by c order by a)
from t1;
drop table t1;
--echo #
--echo # MDEV-9847: Window functions: crash with big_tables=1
--echo #
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;
set big_tables=@tmp;
drop table t1;
--echo #
--echo # Check if "ORDER BY window_func" works
--echo #
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;
select *, row_number() over (order by s1, s2) as X from t1 order by X desc;
drop table t1;
--echo #
--echo # Try window functions that are not directly present in the select list
--echo #
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;
drop table t1;
--echo #
--echo # MDEV-9894: Assertion `0' failed in Window_func_runner::setup
--echo # return ER_NOT_SUPPORTED_YET for aggregates that are not yet supported
--echo # as window functions.
--echo #
create table t1 (i int);
insert into t1 values (1),(2);
--error ER_NOT_SUPPORTED_YET
SELECT MAX(i) OVER (PARTITION BY (i)) FROM t1;
drop table t1;
--echo #
--echo # Check the 0 in ROWS 0 PRECEDING
--echo #
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;
select
pk, a,
sum(a) over (order by pk rows between 1 preceding and 0 preceding)
from t1;
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;
select
part_id, pk, a,
sum(a) over (partition by part_id order by pk rows between 1 preceding and 0 preceding)
from t1;
drop table t1;
--echo #
--echo # MDEV-9780, The "DISTINCT must not bet converted into GROUP BY when
--echo # window functions are present" part
--echo #
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;
select distinct rank() over (partition by part_id order by a) from t1;
explain format=json
select distinct rank() over (partition by part_id order by a) from t1;
drop table t1;
--echo #
--echo # MDEV-9893: Window functions with different ORDER BY lists,
--echo # one of these lists containing an expression
--echo #
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;
drop table t1;
--echo #
--echo # MDEV-9925: Wrong result with aggregate function as a window function
--echo #
create table t1 (i int);
insert into t1 values (1),(2);
select i, sum(i) over (partition by i) from t1;
drop table t1;
--echo #
--echo # MDEV-9922: Assertion `!join->only_const_tables() && fsort' failed in int create_sort_index
--echo #
create view v1 as select 1 as i;
select rank() over (order by i) from v1;
drop view v1;
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