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Current File : //usr/opt/mysql57/mysql-test/t/myisam_mrr_none.test

# This tests the functionality of the Myisam engine
# These testcases also exist in InnoDB engine
# All tests are required to run with Myisam
# Hence MTR starts mysqld with MyISAM as default

--source include/force_myisam_default.inc
--source include/have_myisam.inc

#
# MRR/MyISAM tests.
# (Turns off all 6.0 optimizer switches, even MRR)
# 

--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';
}
if (`select locate('mrr', @@optimizer_switch) > 0`) 
{
  set optimizer_switch='mrr=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;

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