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#
# MDEV-4260 Don't create frm files for temporary tables
#
# Ensure we don't overflow the internal heap table size in the join
set @save_use_stat_tables= @@use_stat_tables;
set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
set @@optimizer_use_condition_selectivity=1;
set @@use_stat_tables= NEVER;
set @@session.max_heap_table_size=16*1024*1024;
create table t1 select * from information_schema.session_status where variable_name like 'Opened%';
create temporary table t2 (a int) engine=memory;
select variable_name, session_status.variable_value - t1.variable_value
from information_schema.session_status join t1 using (variable_name);
let $tmpdir= `select @@tmpdir`;
--list_files $tmpdir/ #sql*
truncate table t2;
select variable_name, session_status.variable_value - t1.variable_value
from information_schema.session_status join t1 using (variable_name);
set @@use_stat_tables= @save_use_stat_tables;
set @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
drop table t1;
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