我要查找号码重复以及内容重复的记录，比如
号码 内容
23434 好好学习
23434 好好学习
6777 天天向上
……
------解决方案--------------------
- SQL code
select [号码],[内容] from [表] group by [号码],[内容] having count(1)>1
------解决方案--------------------
- SQL code
if OBJECT_ID('表a') is not null drop table [表a] go create table [表a](groupnum int,B int) INSERT INTO [表a] VALUES(1,11) INSERT INTO [表a] VALUES(1,11) INSERT INTO [表a] VALUES(1,10) INSERT INTO [表a] VALUES(2,11) INSERT INTO [表a] VALUES(2,20) INSERT INTO [表a] VALUES(2,20) INSERT INTO [表a] VALUES(2,11) INSERT INTO [表a] VALUES(2,15) INSERT INTO [表a] VALUES(3,23) INSERT INTO [表a] VALUES(3,23) INSERT INTO [表a] VALUES(3,15) INSERT INTO [表a] VALUES(3,6) INSERT INTO [表a] VALUES(3,6) INSERT INTO [表a] VALUES(3,6) ;with cte as ( select * ,rn=ROW_NUMBER()over(partition by groupnum,B order by groupnum) from 表a ) select * from cte where rn<>1 groupnum B rn----------- ----------- --------------------1 11 22 11 22 20 23 6 23 6 33 23 2(6 行受影响)
------解决方案--------------------
- SQL code
if OBJECT_ID('表a') is not null drop table [表a] go create table [表a](号码 int,内容 varchar(50),时间 datetime) INSERT INTO [表a] VALUES(23434,'好好学习','2011-01-01 08:03:10') INSERT INTO [表a] VALUES(23434,'好好学习','2011-02-01 08:03:10') INSERT INTO [表a] VALUES(6777,'天天向上','2011-03-01 08:03:10') INSERT INTO [表a] VALUES(23434,'好好学习1','2011-01-01 08:03:10') ;with cte as ( select * ,rn=ROW_NUMBER()over(partition by 号码,内容 order by 号码) from 表a ) select * from cte where rn=1 号码 内容 时间----------- -------------------------------------------------- -----------------------23434 好好学习 2011-02-01 08:03:10.000(1 行受影响)
------解决方案--------------------