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nexedi
MariaDB
Commits
3984062b
Commit
3984062b
authored
Jul 04, 2011
by
Igor Babaev
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Merge.
parents
c9e969b6
3f7d51d0
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4 changed files
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54 additions
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39 deletions
+54
-39
mysql-test/r/view.result
mysql-test/r/view.result
+31
-0
mysql-test/t/view.test
mysql-test/t/view.test
+21
-0
sql/item.cc
sql/item.cc
+0
-34
sql/item.h
sql/item.h
+2
-5
No files found.
mysql-test/r/view.result
View file @
3984062b
...
@@ -4246,3 +4246,34 @@ a MIN(b)
...
@@ -4246,3 +4246,34 @@ a MIN(b)
7 78
7 78
DROP VIEW v1;
DROP VIEW v1;
DROP TABLE t1,t2;
DROP TABLE t1,t2;
#
# LP bug #804686: query over a derived table using a view
# with a degenerated where condition
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (0,0), (1,0), (0,0), (1,1), (1,0);
CREATE VIEW v1 AS SELECT a,b FROM t1;
CREATE VIEW v2 AS SELECT a, MAX(b) AS b FROM t1 GROUP BY a;
SELECT * FROM (SELECT b FROM v1 WHERE b = 0) t WHERE b<>0;
b
SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b<>0;
b
SELECT * FROM (SELECT b FROM v1 WHERE b = 0) t WHERE b;
b
SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b;
b
EXPLAIN EXTENDED
SELECT * FROM (SELECT b FROM v1 WHERE b = 0) t WHERE b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b` from `test`.`t1` where 0
EXPLAIN EXTENDED
SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
3 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 Using temporary; Using filesort
Warnings:
Note 1003 select `v2`.`b` AS `b` from `test`.`v2` where 0
DROP VIEW v1,v2;
DROP TABLE t1;
mysql-test/t/view.test
View file @
3984062b
...
@@ -4192,3 +4192,24 @@ SELECT a, MIN(b) FROM v1 GROUP BY a;
...
@@ -4192,3 +4192,24 @@ SELECT a, MIN(b) FROM v1 GROUP BY a;
DROP
VIEW
v1
;
DROP
VIEW
v1
;
DROP
TABLE
t1
,
t2
;
DROP
TABLE
t1
,
t2
;
--
echo
#
--
echo
# LP bug #804686: query over a derived table using a view
--
echo
# with a degenerated where condition
--
echo
#
CREATE
TABLE
t1
(
a
int
,
b
int
);
INSERT
INTO
t1
VALUES
(
0
,
0
),
(
1
,
0
),
(
0
,
0
),
(
1
,
1
),
(
1
,
0
);
CREATE
VIEW
v1
AS
SELECT
a
,
b
FROM
t1
;
CREATE
VIEW
v2
AS
SELECT
a
,
MAX
(
b
)
AS
b
FROM
t1
GROUP
BY
a
;
SELECT
*
FROM
(
SELECT
b
FROM
v1
WHERE
b
=
0
)
t
WHERE
b
<>
0
;
SELECT
*
FROM
(
SELECT
b
FROM
v2
WHERE
b
=
0
)
t
WHERE
b
<>
0
;
SELECT
*
FROM
(
SELECT
b
FROM
v1
WHERE
b
=
0
)
t
WHERE
b
;
SELECT
*
FROM
(
SELECT
b
FROM
v2
WHERE
b
=
0
)
t
WHERE
b
;
EXPLAIN
EXTENDED
SELECT
*
FROM
(
SELECT
b
FROM
v1
WHERE
b
=
0
)
t
WHERE
b
;
EXPLAIN
EXTENDED
SELECT
*
FROM
(
SELECT
b
FROM
v2
WHERE
b
=
0
)
t
WHERE
b
;
DROP
VIEW
v1
,
v2
;
DROP
TABLE
t1
;
sql/item.cc
View file @
3984062b
...
@@ -6883,40 +6883,6 @@ bool Item_direct_ref::get_date(MYSQL_TIME *ltime,uint fuzzydate)
...
@@ -6883,40 +6883,6 @@ bool Item_direct_ref::get_date(MYSQL_TIME *ltime,uint fuzzydate)
}
}
Item
*
Item_direct_ref_to_ident
::
transform
(
Item_transformer
transformer
,
uchar
*
argument
)
{
DBUG_ASSERT
(
!
current_thd
->
is_stmt_prepare
());
Item
*
new_item
=
ident
->
transform
(
transformer
,
argument
);
if
(
!
new_item
)
return
0
;
DBUG_ASSERT
(
new_item
->
type
()
==
FIELD_ITEM
||
new_item
->
type
()
==
REF_ITEM
);
if
(
ident
!=
new_item
)
current_thd
->
change_item_tree
((
Item
**
)
&
ident
,
new_item
);
return
(
this
->*
transformer
)(
argument
);
}
Item
*
Item_direct_ref_to_ident
::
compile
(
Item_analyzer
analyzer
,
uchar
**
arg_p
,
Item_transformer
transformer
,
uchar
*
arg_t
)
{
if
(
!
(
this
->*
analyzer
)(
arg_p
))
return
0
;
uchar
*
arg_v
=
*
arg_p
;
Item
*
new_item
=
ident
->
compile
(
analyzer
,
&
arg_v
,
transformer
,
arg_t
);
if
(
new_item
&&
ident
!=
new_item
)
{
DBUG_ASSERT
(
new_item
->
type
()
==
FIELD_ITEM
||
new_item
->
type
()
==
REF_ITEM
);
current_thd
->
change_item_tree
((
Item
**
)
&
ident
,
new_item
);
}
return
(
this
->*
transformer
)(
arg_t
);
}
Item_cache_wrapper
::~
Item_cache_wrapper
()
Item_cache_wrapper
::~
Item_cache_wrapper
()
{
{
DBUG_ASSERT
(
expr_cache
==
0
);
DBUG_ASSERT
(
expr_cache
==
0
);
...
...
sql/item.h
View file @
3984062b
...
@@ -2570,8 +2570,8 @@ class Item_ref :public Item_ident
...
@@ -2570,8 +2570,8 @@ class Item_ref :public Item_ident
Field
*
get_tmp_table_field
()
Field
*
get_tmp_table_field
()
{
return
result_field
?
result_field
:
(
*
ref
)
->
get_tmp_table_field
();
}
{
return
result_field
?
result_field
:
(
*
ref
)
->
get_tmp_table_field
();
}
Item
*
get_tmp_table_item
(
THD
*
thd
);
Item
*
get_tmp_table_item
(
THD
*
thd
);
inline
table_map
used_tables
()
const
;
table_map
used_tables
()
const
;
inline
void
update_used_tables
();
void
update_used_tables
();
bool
const_item
()
const
bool
const_item
()
const
{
{
return
(
*
ref
)
->
const_item
();
return
(
*
ref
)
->
const_item
();
...
@@ -2713,9 +2713,6 @@ class Item_direct_ref_to_ident :public Item_direct_ref
...
@@ -2713,9 +2713,6 @@ class Item_direct_ref_to_ident :public Item_direct_ref
virtual
void
print
(
String
*
str
,
enum_query_type
query_type
)
virtual
void
print
(
String
*
str
,
enum_query_type
query_type
)
{
ident
->
print
(
str
,
query_type
);
}
{
ident
->
print
(
str
,
query_type
);
}
virtual
Item
*
transform
(
Item_transformer
transformer
,
uchar
*
arg
);
virtual
Item
*
compile
(
Item_analyzer
analyzer
,
uchar
**
arg_p
,
Item_transformer
transformer
,
uchar
*
arg_t
);
};
};
...
...
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