使用SINGLE Query删除TWO TABLES条目

Question

我试图在我的iPhone应用程序的sqlite数据库中删除带有SINGLE Query的两个TABLES条目，但是出现了一个奇怪的错误。

DELETE Sec1Opr_Equipment.*, Sec2Opr_Equipment.* FROM 
Sec1Opr_Equipment INNER JOIN Sec2Opr_Equipment ON Sec1Opr_Equipment.ID = Sec2Opr_Equipment.ID 
WHERE Sec1Opr_Equipment.ID='1'

并尝试

DELETE Sec1Opr_Equipment,Sec2Opr_Equipment
FROM Sec1Opr_Equipment
LEFT JOIN Sec2Opr_Equipment
ON Sec1Opr_Equipment.ID = Sec2Opr_Equipment.ID
WHERE Sec2Opr_Equipment.ID='1'

Plz任何人帮助我.. 提前谢谢

Answer 1

这是不可能的，在SQLite中，delete语句只能删除单个表中没有任何连接的记录。您可以在WHERE子句中使用子查询：

DELETE FROM tbl1 WHERE id IN (SELECT id FROM tbl2 WHERE ...)