1.select * from dbo.Consum_AccountPaymentLog Where CHARINDEX(',1,',','+RelatedUserIDs+',')>0 charindex 在一个表达式中搜索另一个表达式并返回其起始位置(如果找到). 之所以‘1’的两边加上‘,’号是为了防止‘11’,‘111’这样的数据扰乱搜索结果 2.select top 5 ProjectID from Work_WorkLog WHERE UserID=3279 GROUP BY Pr…
"select count(*) from [注册] where datediff(day,time,getdate())<1";//获取当天注册人员数 sql="select id,classid,classname,xiaoshoue,xiaoshou,jinhuo,kucun,addtime " sql=sql&" from xiaoshou where addtime between '" & format(star…
1.查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select * from people where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1) 2.删除表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断,只留有rowid最小的记录delete from people where peopleId …
剑指Offer--常用SQL语句.存储过程和函数 常用SQL语句 1.在MySQL数据库建立多对多的数据表关系 2.授权.取消授权 grant.revoke grant select, insert, update, delete on testdb.* to common_user@'%': revoke all on *.* from dba@localhost; create user guest@localhost identified by '123456': grant select…