# 2011-02-23 - Added
#

--source include/have_innodb.inc

SET @start_global_value = @@global.innodb_lru_scan_depth;
SELECT @start_global_value;

#
# exists as global only
#
--echo Valid value 100 or more
select @@global.innodb_lru_scan_depth >= 100;
select @@global.innodb_lru_scan_depth;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.innodb_lru_scan_depth;
show global variables like 'innodb_lru_scan_depth';
show session variables like 'innodb_lru_scan_depth';
select * from information_schema.global_variables where variable_name='innodb_lru_scan_depth';
select * from information_schema.session_variables where variable_name='innodb_lru_scan_depth';

#
# show that it's writable
#
set global innodb_lru_scan_depth=325;
select @@global.innodb_lru_scan_depth;
select * from information_schema.global_variables where variable_name='innodb_lru_scan_depth';
select * from information_schema.session_variables where variable_name='innodb_lru_scan_depth';
--error ER_GLOBAL_VARIABLE
set session innodb_lru_scan_depth=444;

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_lru_scan_depth=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_lru_scan_depth=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_lru_scan_depth="foo";

set global innodb_lru_scan_depth=7;
select @@global.innodb_lru_scan_depth;
select * from information_schema.global_variables where variable_name='innodb_lru_scan_depth';
set global innodb_lru_scan_depth=-7;
select @@global.innodb_lru_scan_depth;
select * from information_schema.global_variables where variable_name='innodb_lru_scan_depth';

#
# min/max values
#
set global innodb_lru_scan_depth=100;
select @@global.innodb_lru_scan_depth;

SET @@global.innodb_lru_scan_depth = @start_global_value;
SELECT @@global.innodb_lru_scan_depth;