标签：SQL字段重复记录
只筛选一个字段值相同的记录select * from A where PDDT in(
select PDDT FROM A
group by PDDT
having count(PDDT)>1
)筛选多个字段值相同的的记录
SELECT COUNT(*),DeptID, PDDT , DLNo , DLNoRe, MacNo
FROM A
GROUP BY DeptID, PDDT , DLNo , DLNoRe, MacNo
having count(*)>1标签：SQL字段重复记录
原文地址：http://blog.51cto.com/alun51cto/2114325
