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Bug#23299 Some queries against INFORMATION_SCHEMA with subqueries fail

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additional call of file->extra() method with HA_EXTRA_NO_CACHE parameter
This commit is contained in:
gluh@mysql.com/eagle.(none) 2007-02-01 19:12:45 +04:00
parent d9ae9ce58d
commit d1185aaeaf
3 changed files with 23 additions and 0 deletions
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10
mysql-test/r/information_schema.result
View File

@ -1269,3 +1269,13 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found 1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED tables ALL NULL NULL NULL NULL 2 2 DERIVED tables ALL NULL NULL NULL NULL 2
drop view v1; drop view v1;
create table t1 (f1 int(11));
create table t2 (f1 int(11), f2 int(11));
select table_name from information_schema.tables
where table_schema = 'test' and table_name not in
(select table_name from information_schema.columns
where table_schema = 'test' and column_name = 'f3');
table_name
t1
t2
drop table t1,t2;

12
mysql-test/t/information_schema.test
View File

@ -987,4 +987,16 @@ explain select * from v1;
explain select * from (select table_name from information_schema.tables) as a; explain select * from (select table_name from information_schema.tables) as a;
drop view v1; drop view v1;
#
# Bug#23299 Some queries against INFORMATION_SCHEMA with subqueries fail
#
create table t1 (f1 int(11));
create table t2 (f1 int(11), f2 int(11));
select table_name from information_schema.tables
where table_schema = 'test' and table_name not in
(select table_name from information_schema.columns
where table_schema = 'test' and column_name = 'f3');
drop table t1,t2;
# End of 5.0 tests. # End of 5.0 tests.

1
sql/sql_show.cc
View File

@ -3973,6 +3973,7 @@ bool get_schema_tables_result(JOIN *join)
if (is_subselect) // is subselect if (is_subselect) // is subselect
{ {
table_list->table->file->extra(HA_EXTRA_NO_CACHE);
table_list->table->file->extra(HA_EXTRA_RESET_STATE); table_list->table->file->extra(HA_EXTRA_RESET_STATE);
table_list->table->file->delete_all_rows(); table_list->table->file->delete_all_rows();
free_io_cache(table_list->table); free_io_cache(table_list->table);