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nexedi
MariaDB
Commits
c7fdbffa
Commit
c7fdbffa
authored
Mar 03, 2005
by
unknown
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Fix for bug #8164: subquery with INFORMATION_SCHEMA.COLUMNS, 100 % CPU
parent
66d2d13a
Changes
3
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+20
-0
mysql-test/r/information_schema.result
mysql-test/r/information_schema.result
+7
-0
mysql-test/t/information_schema.test
mysql-test/t/information_schema.test
+9
-0
sql/sql_show.cc
sql/sql_show.cc
+4
-0
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mysql-test/r/information_schema.result
View file @
c7fdbffa
...
@@ -631,3 +631,10 @@ TABLES UPDATE_TIME datetime
...
@@ -631,3 +631,10 @@ TABLES UPDATE_TIME datetime
TABLES CHECK_TIME datetime
TABLES CHECK_TIME datetime
ROUTINES CREATED datetime
ROUTINES CREATED datetime
ROUTINES LAST_ALTERED datetime
ROUTINES LAST_ALTERED datetime
SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES A
WHERE NOT EXISTS
(SELECT * FROM INFORMATION_SCHEMA.COLUMNS B
WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
AND A.TABLE_NAME = B.TABLE_NAME);
COUNT(*)
0
mysql-test/t/information_schema.test
View file @
c7fdbffa
...
@@ -400,3 +400,12 @@ information_schema.columns
...
@@ -400,3 +400,12 @@ information_schema.columns
where
data_type
=
'longtext'
;
where
data_type
=
'longtext'
;
select
table_name
,
column_name
,
data_type
from
information_schema
.
columns
select
table_name
,
column_name
,
data_type
from
information_schema
.
columns
where
data_type
=
'datetime'
;
where
data_type
=
'datetime'
;
#
# Bug #8164 subquery with INFORMATION_SCHEMA.COLUMNS, 100 % CPU
#
SELECT
COUNT
(
*
)
FROM
INFORMATION_SCHEMA
.
TABLES
A
WHERE
NOT
EXISTS
(
SELECT
*
FROM
INFORMATION_SCHEMA
.
COLUMNS
B
WHERE
A
.
TABLE_SCHEMA
=
B
.
TABLE_SCHEMA
AND
A
.
TABLE_NAME
=
B
.
TABLE_NAME
);
sql/sql_show.cc
View file @
c7fdbffa
...
@@ -1649,6 +1649,10 @@ bool uses_only_table_name_fields(Item *item, TABLE_LIST *table)
...
@@ -1649,6 +1649,10 @@ bool uses_only_table_name_fields(Item *item, TABLE_LIST *table)
strlen
(
item_field
->
field_name
),
0
)))
strlen
(
item_field
->
field_name
),
0
)))
return
0
;
return
0
;
}
}
if
(
item
->
type
()
==
Item
::
SUBSELECT_ITEM
&&
!
item
->
const_item
())
return
0
;
return
1
;
return
1
;
}
}
...
...
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