Question

我想使用WHERE IN从基于plan_temp表的计划ID中删除2个表中的数据。如果您能帮助我，我将非常感谢

这是我的代码，现在我想将其作为单个查询

DELETE FROM plan WHERE id_plan IN(SELECT id_plan FROM plan_temp WHERE no=1184);


DELETE FROM plan_temp WHERE id_plan IN(SELECT id_plan FROM plan_temp WHERE no=1184);

Answer 1

使用INNER JOIN查找两个表中的行

DELETE t1,t2 FROM plan t1
        INNER JOIN
    plan_temp t2 ON t2.id_plan = t1.id_plan 
WHERE
    t1.id_plan IN (SELECT id_plan FROM (SELECT * FROM plan_temp) t3 WHERE no=1184);

请在带有备份的测试环境中测试所有查询，以查看这是否真的是您想要的

Answer 2

很遗憾，您不能删除两个分开的表。

DELETE FROM plan WHERE id_plan = 1184

DELETE FROM plan_temp WHERE id_plan = 1184

但是，您可以使用内部联接从两个表中删除这两个值。因此，必须是这样；

DELETE  plan, plan_temp FROM plan INNER JOIN plan_temp
Where
plan.id_plan = plan_temp.id_plan and id_plan = 1184;

使用where IN子句从多个表中删除记录

2 个答案: