摘要:
连接信息 sql use information_schema; select from information_schema. where info is not null; show processlist; kill id; select table_name,column_comment f 阅读全文
摘要:
创建 随机字符串 sql substring(MD5(RAND()),1,5) or DROP FUNCTION IF EXISTS ; delimiter $$ CREATE FUNCTION (n int) RETURNS varchar(255) CHARSET utf8 BEGIN DECL 阅读全文