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nexedi
MariaDB
Commits
5d865045
Commit
5d865045
authored
Mar 11, 2005
by
sergefp@mysql.com
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Fix for BUG#8711: "<=>" may have true value for NULL arguments, so make
Item_func_equal::not_null_tables() always return 0.
parent
4559fb99
Changes
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34 additions
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+34
-0
mysql-test/r/join_outer.result
mysql-test/r/join_outer.result
+20
-0
mysql-test/t/join_outer.test
mysql-test/t/join_outer.test
+13
-0
sql/item_cmpfunc.h
sql/item_cmpfunc.h
+1
-0
No files found.
mysql-test/r/join_outer.result
View file @
5d865045
...
...
@@ -684,3 +684,23 @@ t1 ALL NULL NULL NULL NULL 3
t2 ALL NULL NULL NULL NULL 2
t3 ALL NULL NULL NULL NULL 2
drop table t1, t2, t3;
create table t1 (
a int(11),
b char(10),
key (a)
);
insert into t1 (a) values (1),(2),(3),(4);
create table t2 (a int);
select * from t1 left join t2 on t1.a=t2.a where not (t2.a <=> t1.a);
a b a
1 NULL NULL
2 NULL NULL
3 NULL NULL
4 NULL NULL
select * from t1 left join t2 on t1.a=t2.a having not (t2.a <=> t1.a);
a b a
1 NULL NULL
2 NULL NULL
3 NULL NULL
4 NULL NULL
drop table t1,t2;
mysql-test/t/join_outer.test
View file @
5d865045
...
...
@@ -450,3 +450,16 @@ select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is
explain
select
*
from
t1
left
join
t2
on
b1
=
a1
left
join
t3
on
c1
=
a1
and
b1
is
null
;
drop
table
t1
,
t2
,
t3
;
# Test for BUG#8711 '<=>' was considered to be a NULL-rejecting predicate.
create
table
t1
(
a
int
(
11
),
b
char
(
10
),
key
(
a
)
);
insert
into
t1
(
a
)
values
(
1
),(
2
),(
3
),(
4
);
create
table
t2
(
a
int
);
select
*
from
t1
left
join
t2
on
t1
.
a
=
t2
.
a
where
not
(
t2
.
a
<=>
t1
.
a
);
select
*
from
t1
left
join
t2
on
t1
.
a
=
t2
.
a
having
not
(
t2
.
a
<=>
t1
.
a
);
drop
table
t1
,
t2
;
sql/item_cmpfunc.h
View file @
5d865045
...
...
@@ -78,6 +78,7 @@ class Item_func_equal :public Item_bool_func2
Item_func_equal
(
Item
*
a
,
Item
*
b
)
:
Item_bool_func2
(
a
,
b
)
{
};
longlong
val_int
();
void
fix_length_and_dec
();
table_map
not_null_tables
()
const
{
return
0
;
}
enum
Functype
functype
()
const
{
return
EQUAL_FUNC
;
}
enum
Functype
rev_functype
()
const
{
return
EQUAL_FUNC
;
}
cond_result
eq_cmp_result
()
const
{
return
COND_TRUE
;
}
...
...
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