drop table test4
SELECT * INTO test4 from
(
select len(isnull(姓名,0)+isnull(性别,0)+isnull(年龄,0)+isnull(级别,0)+isnull(职务,0)+isnull(行业,0)+isnull([国家/省份],0)+isnull(城市,0)+isnull(企业名称,0)+isnull(电话,0)+isnull(手机,0)+isnull(EMail,0)) as t,ROW_NUMBER() OVER(ORDER BY len(isnull(姓名,0)+isnull(性别,0)+isnull(年龄,0)+isnull(级别,0)+isnull(职务,0)+isnull(行业,0)+isnull([国家/省份],0)+isnull(城市,0)+isnull(企业名称,0)+isnull(电话,0)+isnull(手机,0)+isnull(EMail,0)) DESC) AS 'ID'
,* from Test
where 姓名 IS NOT NULL AND 手机 IS NOT NULL and email IS NOT NULL
) as tt
delete test4
where id not in
(
select min(id) from test4
group by 姓名,手机,EMail)
WITH b AS ( SELECT ROW_NUMBER() OVER ( PARTITION BY 姓名,手机,email ORDER BY id asc ) AS rn,
*
FROM test4
)
DELETE FROM b
WHERE rn > 1
Delete T From
(Select Row_Number() Over(Partition By 姓名,手机,email order By id asc) As RowNumber,* From test4) T
Where T.RowNumber > 1
SELECT 姓名,手机,email,count(*) from test4
GROUP BY 姓名,手机,email
HAVING count(*)>1
