status = show status like ‘%%’ [例:show status like ‘Com_select’]variables = show variables like ‘%%’ [例:show variables like ‘query_cache_size’] 1、MySQL查询次数(status)Com_select;Com_update;Com_insert;Com_delete;Com_change_db 2、查询缓存空间大小:query_cache_size(variables)查询缓存最大查询数据集大小:query_cache_limit(variables