Commit d1185aae authored by gluh@mysql.com/eagle.(none)'s avatar gluh@mysql.com/eagle.(none)
Browse files

Bug#23299 Some queries against INFORMATION_SCHEMA with subqueries fail 

additional call of file->extra() method with HA_EXTRA_NO_CACHE parameter
parent d9ae9ce5

mysql-test/r/information_schema.result

+10 −0
Original line number Diff line number Diff line
@@ -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

2	DERIVED	tables	ALL	NULL	NULL	NULL	NULL	2	

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;

mysql-test/t/information_schema.test

+12 −0
Original line number Diff line number Diff line
@@ -987,4 +987,16 @@ explain select * from v1; 
explain select * from (select table_name from information_schema.tables) as a;

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.

sql/sql_show.cc

+1 −0
Original line number Diff line number Diff line
@@ -3973,6 +3973,7 @@ bool get_schema_tables_result(JOIN *join) 


      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->delete_all_rows();

        free_io_cache(table_list->table);