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Kirill Smelkov
mariadb
Commits
54e296d4
Commit
54e296d4
authored
Oct 14, 2011
by
Igor Babaev
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Merge.
parents
9f6e24a0
9e6f4847
Changes
4
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4 changed files
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91 additions
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0 deletions
+91
-0
mysql-test/r/derived_view.result
mysql-test/r/derived_view.result
+38
-0
mysql-test/t/derived_view.test
mysql-test/t/derived_view.test
+33
-0
sql/item.h
sql/item.h
+5
-0
sql/sql_lex.cc
sql/sql_lex.cc
+15
-0
No files found.
mysql-test/r/derived_view.result
View file @
54e296d4
...
...
@@ -1424,4 +1424,42 @@ a a c a a c b a d
6 23 -1 NULL NULL NULL NULL NULL 5
DROP VIEW v2,v3;
DROP TABLE t1,t2,t3,t4,t5;
#
# LP bug #872735: derived used in a NOT IN subquery
#
CREATE TABLE t1 (b int NOT NULL);
INSERT INTO t1 VALUES (9), (7);
CREATE TABLE t2 (a int NOT NULL) ;
INSERT INTO t2 VALUES (1), (2);
CREATE TABLE t3 (
a int NOT NULL , c int NOT NULL, d varchar(1) NOT NULL,
KEY (c,a) , PRIMARY KEY (a)
);
INSERT INTO t3 VALUES
(14,4,'a'), (15,7,'b'), (16,4,'c'), (17,1,'d'), (18,9,'e'),
(19,4,'f'), (20,8,'g');
SET SESSION optimizer_switch='derived_merge=on,subquery_cache=off';
# The following two EXPLAINs must return the same execution plan
EXPLAIN
SELECT * FROM t1 , t2
WHERE (t2.a ,t1.b) NOT IN (SELECT DISTINCT c,a FROM t3 t);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 DEPENDENT SUBQUERY t ref PRIMARY,c c 4 func 2 Using where; Using index
EXPLAIN
SELECT * FROM t1 , t2
WHERE (t2.a ,t1.b) NOT IN (SELECT DISTINCT c,a FROM (SELECT * FROM t3) t);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 DEPENDENT SUBQUERY t3 ref PRIMARY,c c 4 func 2 Using where; Using index
SELECT * FROM t1 , t2
WHERE (t2.a ,t1.b) NOT IN (SELECT DISTINCT c,a FROM (SELECT * FROM t3) t);
b a
9 1
7 1
9 2
7 2
DROP TABLE t1,t2,t3;
set optimizer_switch=@exit_optimizer_switch;
mysql-test/t/derived_view.test
View file @
54e296d4
...
...
@@ -877,5 +877,38 @@ SELECT STRAIGHT_JOIN *
DROP
VIEW
v2
,
v3
;
DROP
TABLE
t1
,
t2
,
t3
,
t4
,
t5
;
--
echo
#
--
echo
# LP bug #872735: derived used in a NOT IN subquery
--
echo
#
CREATE
TABLE
t1
(
b
int
NOT
NULL
);
INSERT
INTO
t1
VALUES
(
9
),
(
7
);
CREATE
TABLE
t2
(
a
int
NOT
NULL
)
;
INSERT
INTO
t2
VALUES
(
1
),
(
2
);
CREATE
TABLE
t3
(
a
int
NOT
NULL
,
c
int
NOT
NULL
,
d
varchar
(
1
)
NOT
NULL
,
KEY
(
c
,
a
)
,
PRIMARY
KEY
(
a
)
);
INSERT
INTO
t3
VALUES
(
14
,
4
,
'a'
),
(
15
,
7
,
'b'
),
(
16
,
4
,
'c'
),
(
17
,
1
,
'd'
),
(
18
,
9
,
'e'
),
(
19
,
4
,
'f'
),
(
20
,
8
,
'g'
);
SET
SESSION
optimizer_switch
=
'derived_merge=on,subquery_cache=off'
;
--
echo
# The following two EXPLAINs must return the same execution plan
EXPLAIN
SELECT
*
FROM
t1
,
t2
WHERE
(
t2
.
a
,
t1
.
b
)
NOT
IN
(
SELECT
DISTINCT
c
,
a
FROM
t3
t
);
EXPLAIN
SELECT
*
FROM
t1
,
t2
WHERE
(
t2
.
a
,
t1
.
b
)
NOT
IN
(
SELECT
DISTINCT
c
,
a
FROM
(
SELECT
*
FROM
t3
)
t
);
SELECT
*
FROM
t1
,
t2
WHERE
(
t2
.
a
,
t1
.
b
)
NOT
IN
(
SELECT
DISTINCT
c
,
a
FROM
(
SELECT
*
FROM
t3
)
t
);
DROP
TABLE
t1
,
t2
,
t3
;
# The following command must be the last one the file
set
optimizer_switch
=@
exit_optimizer_switch
;
sql/item.h
View file @
54e296d4
...
...
@@ -1816,6 +1816,11 @@ public:
bool
get_date_result
(
MYSQL_TIME
*
ltime
,
uint
fuzzydate
);
bool
is_null
()
{
return
field
->
is_null
();
}
void
update_null_value
();
void
update_used_tables
()
{
if
(
field
&&
field
->
table
)
field
->
table
->
covering_keys
.
intersect
(
field
->
part_of_key
);
}
Item
*
get_tmp_table_item
(
THD
*
thd
);
bool
collect_item_field_processor
(
uchar
*
arg
);
bool
add_field_to_set_processor
(
uchar
*
arg
);
...
...
sql/sql_lex.cc
View file @
54e296d4
...
...
@@ -3411,6 +3411,21 @@ void SELECT_LEX::update_used_tables()
while
((
tl
=
ti
++
))
{
TABLE_LIST
*
embedding
;
if
(
tl
->
table
)
{
embedding
=
tl
->
embedding
;
for
(
embedding
=
tl
->
embedding
;
embedding
;
embedding
=
embedding
->
embedding
)
{
if
(
embedding
->
is_view_or_derived
())
{
DBUG_ASSERT
(
embedding
->
is_merged_derived
());
TABLE
*
tab
=
tl
->
table
;
tab
->
covering_keys
=
tab
->
s
->
keys_for_keyread
;
tab
->
covering_keys
.
intersect
(
tab
->
keys_in_use_for_query
);
break
;
}
}
}
embedding
=
tl
;
do
{
...
...
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