Question

我的数据库中存在一些问题

Select * from table where JobId='329188628'

结果：

ID     JobId      ONETID
-----------------------
32951  329188628    532
32951  329188628    532
32951  329188628    532
32951  329188628    532

我需要删除重复的行。任何人都可以帮帮我吗？

Answer 1

请尝试：

with c as(
select *, row_number() over(partition by id order by (select 0)) as n
from table where JobID='329188628'
)delete from c
where n > 1;

Answer 2

试试这个。

with cte(cnt) as
(
  select row_number() over(partition by ID,JobId,ONETID order by getdate())
  from table where JobId='329188628'
)
delete from cte where cnt>1

并且仅使用JobId和OnetId进行分组。

with cte(cnt) as
(
  select row_number() over(partition by JobId,ONETID order by getdate())
  from table where JobId='329188628'
)
delete from cte where cnt>1

Answer 3

使用DISTINCT关键字。

Select DISTINCT * from table where JobId='329188628'

删除表中的重复元组

3 个答案: