Question

我想从#temp_scoring中删除匹配的帐户（在ID和acct_num上匹配），但最终删除了表#temp_scoring中的所有行。这是代码：

delete from #temp_scoring
where exists (
 select * from #temp_edu te
 where te.ID = ID
 and te.acct_num = acct_num)

作为旁注，我会为#temp_scoring创建一个别名，但是当我这样做时它给了我一个语法错误。

Answer 1

DELETE s
FROM
    #temp_scoring s
    INNER JOIN #temp_edu te
    ON s.ID = te.ID
    AND s.acct_num = te.acct_num

您可以使用加入

进行删除

Answer 2

您的问题是列名：

delete from #temp_scoring
where exists (
 select * from #temp_edu te
 where te.ID = ID  --- Here ID means te.ID
 and te.acct_num = acct_num  -- and acct_num means te.acct_num
)

要明确ID = te.ID因为那是ID最近的封闭范围。

你可能想要这个

delete ts 
from #temp_scoring ts
where exists (
 select 1
 from #temp_edu te
 where te.ID = ts.ID  
 and te.acct_num = ts.acct_num
)

删除SQL Server中两个表之间的交集

2 个答案: