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Fix for bug#7915: crash,JOIN VIEW, subquery, SELECT .. FROM INFORMATION_SCHEMA.COLUMNS

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gluh@gluh.mysql.r18.ru 2005-02-16 13:00:03 +03:00
parent 0a96ef4c90
commit 638dc7d9e9
3 changed files with 23 additions and 0 deletions
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6
mysql-test/r/information_schema.result
View file

@ -604,3 +604,9 @@ Variable_name Value
show global status like "Threads_running";
Variable_name Value
Threads_running 1
create table t1(f1 int);
create table t2(f2 int);
create view v1 as select * from t1, t2;
set @got_val= (select count(*) from information_schema.columns);
drop view v1;
drop table t1, t2;

11
mysql-test/t/information_schema.test
View file

@ -352,3 +352,14 @@ show variables where variable_name like "skip_show_databas";
# Bug #7981:SHOW GLOBAL STATUS crashes server
#
show global status like "Threads_running";
#
# Bug #7915 crash,JOIN VIEW, subquery,
# SELECT .. FROM INFORMATION_SCHEMA.COLUMNS
#
create table t1(f1 int);
create table t2(f2 int);
create view v1 as select * from t1, t2;
set @got_val= (select count(*) from information_schema.columns);
drop view v1;
drop table t1, t2;

6
sql/sql_lex.cc
View file

@ -1733,6 +1733,12 @@ bool st_lex::can_not_use_merged()
{
case SQLCOM_CREATE_VIEW:
case SQLCOM_SHOW_CREATE:
/*
SQLCOM_SHOW_FIELDS is necessary to make
information schema tables working correctly with views.
see get_schema_tables_result function
*/
case SQLCOM_SHOW_FIELDS:
return TRUE;
default:
return FALSE;