一.创建存储过程 if Exists(select name from sysobjects where NAME = 'sp1LoginUser' and type='P')drop procedure sp1LoginUserGOCREATE PROCEDURE [dbo].[sp1LoginUser]-- Add the parameters for the stored procedure here@username NVARCHAR(50)ASBEGINDECLARE @identit
一道sql面试题(查询语句) id name age 1 a 11 2 b 11 3 c 12 4 d 13 5 e 12 . . . 查询age唯一的那一个 这个应该怎么写 满意答案 热心问友 2010-10-14 select * from table1 where id not in (select age from table1 group by age having count(1)>1) --Up