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SQL Server查询重复数据

发布时间 2023-06-29 10:37:03作者: microsoft-zhcn
1.查询单列重复 
select * from table
where name in (select name from table group by name having count(name) > 1)

　　

2.查询多列重复

SELECT a.* FROM table a,(
SELECT name,code
FROM table 
GROUP BY name,code
HAVING COUNT(1)>1) AS b
WHERE a.name=b.name AND a.code=b.code