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# 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'; --disable_warnings 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'; --enable_warnings # # show that it's writable # set global innodb_lru_scan_depth=325; select @@global.innodb_lru_scan_depth; --disable_warnings 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'; --enable_warnings --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; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_lru_scan_depth'; --enable_warnings set global innodb_lru_scan_depth=-7; select @@global.innodb_lru_scan_depth; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_lru_scan_depth'; --enable_warnings # # 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;