B4BY.588

: / usr / share / mysql-test / t /
Filename : myisam_mrr.test
back
#
# MRR/MyISAM tests.
# (Turns off all other 6.0 optimizer switches than MRR)
#

--source include/have_mrr.inc

set optimizer_switch='mrr=on,mrr_cost_based=off';

--disable_query_log
if (`select locate('semijoin', @@optimizer_switch) > 0`) 
{
  set optimizer_switch='semijoin=off';
}
if (`select locate('materialization', @@optimizer_switch) > 0`) 
{
  set optimizer_switch='materialization=off';
}
if (`select locate('index_condition_pushdown', @@optimizer_switch) > 0`) 
{
  set optimizer_switch='index_condition_pushdown=off';
}
--enable_query_log

set @read_rnd_buffer_size_save= @@read_rnd_buffer_size;
set read_rnd_buffer_size=79;
select @@read_rnd_buffer_size;

-- source include/mrr_tests.inc

set @@read_rnd_buffer_size= @read_rnd_buffer_size_save;
set optimizer_switch=default;