尝试执行此操作(适用于SQL Server):
WITH X AS (), Y AS (), Z AS ()
DELETE FROM TBL
WHERE TBL.ID IN (SELECT ID FROM Z);
这适用于Oracle:
WITH X AS (), Y AS (), Z AS ()
SELECT * FROM TBL
WHERE TBL.ID IN (SELECT ID FROM Z);
但是DELETE没有:ORA-00928:缺少SELECT关键字
我的子查询相当大,是否有不同的语法可以使其工作?
答案 0 :(得分:12)
除了SELECT语句之外,您不能使用Subquery Factoring / CTE。 From the documentation:
您可以在任何中指定此子句 顶级SELECT语句和大多数 子查询的类型。
你可以这样做:
DELETE FROM tbl WHERE tbl.id IN
(WITH X AS (), Y AS (), Z AS ()
SELECT id FROM TBL
WHERE TBL.ID IN (SELECT ID FROM Z));
答案 1 :(得分:8)
我让它工作(我确信它在SQL Server中不起作用):
DELETE FROM TBL
WHERE TBL.ID IN (
WITH X AS (), Y AS (), Z AS ()
SELECT ID FROM Z
);
答案 2 :(得分:1)
嗯,至少,您需要以某种方式让所有别名查询出现在FROM语句中。我不知道是否还有更多问题,但这是必须的(我相信00928是你不这样做时会发生的错误)。