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Fixed bug mdev-11907.

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With the current design the function copy_funcs() should ignore
the items with window functions from the array **func_ptr.
This commit is contained in:
Igor Babaev
2017-03-28 14:48:54 -07:00
parent d9bab412e9
commit f381e73f7d
3 changed files with 45 additions and 88 deletions
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109
mysql-test/r/win.result
View File

@ -2270,17 +2270,6 @@ pk c CNT
8 2 0.5000
9 2 0.6667
10 2 1.0000
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
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;
@ -2299,17 +2288,6 @@ pk c CNT
8 2 0.5000
9 2 0.6667
10 2 1.0000
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
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
@ -2323,17 +2301,6 @@ pk c CNT
8 2 0.5000
9 2 0.6667
10 2 1.0000
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
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;
@ -2351,17 +2318,6 @@ pk c CNT
8 2 0.5000
9 2 0.6667
10 2 1.0000
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
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
@ -2375,17 +2331,6 @@ pk c CNT
8 2 0.5000
9 2 0.4000
10 2 0.3333
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
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;
@ -2403,17 +2348,6 @@ pk c CNT
8 2 0.5000
9 2 0.4000
10 2 0.3333
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
select pk, c, c/count(*) over (partition by c order by pk
range between 3 preceding and current row) as CNT
from t1;
@ -2428,17 +2362,6 @@ pk c CNT
8 2 0.5000
9 2 0.5000
10 2 0.5000
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
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;
@ -2457,17 +2380,6 @@ pk c CNT
8 2 0.5000
9 2 0.5000
10 2 0.5000
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
Warning 1365 Division by 0
drop view v1,v2,v3,v4;
drop table t0,t1;
#
@ -3096,3 +3008,24 @@ 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;

21
mysql-test/t/win.test
View File

@ -1809,3 +1809,24 @@ select i, row_number() over () from t1 group by 1+2;
select i, rank() over (order by i) rnk from t1 group by 1+2;
drop table t1;
--echo #
--echo # MDEV-11907: window function as the second operand of division
--echo #
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;
show warnings;
set sql_mode=@sql_mode_save;
drop table t1;

3
sql/sql_select.cc
View File

@ -23338,6 +23338,9 @@ copy_funcs(Item **func_ptr, const THD *thd)
Item *func;
for (; (func = *func_ptr) ; func_ptr++)
{
if (func->type() == Item::FUNC_ITEM &&
((Item_func *) func)->with_window_func)
continue;
func->save_in_result_field(1);
/*
Need to check the THD error state because Item::val_xxx() don't