# ulong global --source include/have_maria.inc SET @start_global_value = @@global.aria_pagecache_division_limit; # # exists as global only # select @@global.aria_pagecache_division_limit; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.aria_pagecache_division_limit; show global variables like 'aria_pagecache_division_limit'; show session variables like 'aria_pagecache_division_limit'; select * from information_schema.global_variables where variable_name='aria_pagecache_division_limit'; select * from information_schema.session_variables where variable_name='aria_pagecache_division_limit'; # # show that it's writable # set global aria_pagecache_division_limit=20; select @@global.aria_pagecache_division_limit; --error ER_GLOBAL_VARIABLE set session aria_pagecache_division_limit=1; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global aria_pagecache_division_limit=1.1; --error ER_WRONG_TYPE_FOR_VAR set global aria_pagecache_division_limit=1e1; --error ER_WRONG_TYPE_FOR_VAR set global aria_pagecache_division_limit="foo"; # # min/max values, block size # set global aria_pagecache_division_limit=0; select @@global.aria_pagecache_division_limit; set global aria_pagecache_division_limit=cast(-1 as unsigned int); select @@global.aria_pagecache_division_limit; SET @@global.aria_pagecache_division_limit = @start_global_value;