MySQL

数据库: pulaw 数据表: dianpu 字段:  mobile 查找字段 mobile 中重复 ... Read More

UPDATE 表名 SET 字段名=REPLACE(字段名,’要更换的字符串’,&#8 ... Read More

SELECT goods_id,goods_name,concat(‘web_http&#8217 ... Read More

SELECT Id,UserName,HisName FROM users WHERE left(HisNam ... Read More

(SELECT * FROM book WHERE Id =22)UNION(SELECT * FROM bo ... Read More

select * from message,reply where message.Id=reply.MsId ... Read More