Current File : //usr/share/mysql-test/suite/sys_vars/t/innodb_random_read_ahead_basic.test
# 2010-01-25 - Added
#
--source include/have_innodb.inc
SET @start_global_value = @@global.innodb_random_read_ahead;
SELECT @start_global_value;
#
# exists as global only
#
--echo Valid values are 'ON' and 'OFF'
select @@global.innodb_random_read_ahead in (0, 1);
select @@global.innodb_random_read_ahead;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.innodb_random_read_ahead;
show global variables like 'innodb_random_read_ahead';
show session variables like 'innodb_random_read_ahead';
select * from information_schema.global_variables where variable_name='innodb_random_read_ahead';
select * from information_schema.session_variables where variable_name='innodb_random_read_ahead';
#
# show that it's writable
#
set global innodb_random_read_ahead='ON';
select @@global.innodb_random_read_ahead;
select * from information_schema.global_variables where variable_name='innodb_random_read_ahead';
select * from information_schema.session_variables where variable_name='innodb_random_read_ahead';
set @@global.innodb_random_read_ahead=0;
select @@global.innodb_random_read_ahead;
select * from information_schema.global_variables where variable_name='innodb_random_read_ahead';
select * from information_schema.session_variables where variable_name='innodb_random_read_ahead';
set global innodb_random_read_ahead=1;
select @@global.innodb_random_read_ahead;
select * from information_schema.global_variables where variable_name='innodb_random_read_ahead';
select * from information_schema.session_variables where variable_name='innodb_random_read_ahead';
set @@global.innodb_random_read_ahead='OFF';
select @@global.innodb_random_read_ahead;
select * from information_schema.global_variables where variable_name='innodb_random_read_ahead';
select * from information_schema.session_variables where variable_name='innodb_random_read_ahead';
--error ER_GLOBAL_VARIABLE
set session innodb_random_read_ahead='OFF';
--error ER_GLOBAL_VARIABLE
set @@session.innodb_random_read_ahead='ON';
#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_random_read_ahead=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_random_read_ahead=1e1;
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_random_read_ahead=2;
--echo NOTE: The following should fail with ER_WRONG_VALUE_FOR_VAR (BUG#50643)
set global innodb_random_read_ahead=-3;
select @@global.innodb_random_read_ahead;
select * from information_schema.global_variables where variable_name='innodb_random_read_ahead';
select * from information_schema.session_variables where variable_name='innodb_random_read_ahead';
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_random_read_ahead='AUTO';
#
# Cleanup
#
SET @@global.innodb_random_read_ahead = @start_global_value;
SELECT @@global.innodb_random_read_ahead;
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