SQL:选择要通过连接删除的行

场景:

假设我有两个表格,TableA和TableB。 TableB的主键是单列(BId),并且是TableA中的外键列。

在我的情况下,我想删除TableB中与TableB中的特定行链接的所有行:我可以通过连接来实现吗? 删除从连接拉入的所有行?

DELETE FROM TableA 
FROM
   TableA a
   INNER JOIN TableB b
      ON b.BId = a.BId
      AND [my filter condition]

还是我被迫这样做:

DELETE FROM TableA
WHERE
   BId IN (SELECT BId FROM TableB WHERE [my filter condition])

我想问的原因是,在我看来,在处理大型表格时,第一种选择会更加有效。

谢谢!


DELETE TableA
FROM   TableA a
       INNER JOIN TableB b
               ON b.Bid = a.Bid
                  AND [my filter condition] 

应该管用


我会用这个语法

Delete a 
from TableA a
Inner Join TableB b
on  a.BId = b.BId
WHERE [filter condition]

是的你可以。 示例:

DELETE TableA 
FROM TableA AS a
INNER JOIN TableB AS b
ON a.BId = b.BId
WHERE [filter condition]
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