查詢和設置
查詢會話的變量
show variables like 'interactive_timeout';
show variables like 'wait_timeout';
一句話查詢會話變量
select variable_name,variable_value from information_schema.session_variables where variable_name in ('interactive_timeout','wait_timeout');
設置會話變量
set session WAIT_TIMEOUT=10;
set session INTERACTIVE_TIMEOUT=10;
查詢全局變量
show global variables like 'wait_timeout';
show variables like 'interactive_timeout';
一句話查詢全局變量
select variable_name,variable_value from information_schema.global_variables where variable_name in ('interactive_timeout','wait_timeout');
設置全局變量
set global wait_timeout=10;
set global interactive_timeout=10;