带有子查询因子的Oracle DELETE语句

Question

尝试这样做(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DELETE不会:ORA-00928:缺少SELECT关键字

我的子查询相当大,是否有不同的语法来使其工作？

Answer 1

除了SELECT语句之外,您不能使用Subquery Factoring/CTE.从文档:

您可以在任何顶级SELECT语句和大多数类型的子查询中指定此子句.

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));

Answer 2

我得到了这个工作(我肯定在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
);