使用Join的MySQL删除记录不起作用

Question

我正在尝试使用JOIN删除记录，但是无法正常工作，因此我尝试使用IN来删除记录也无法正常工作。但是，如果我将DELETE更改为SELECT，则可以正常工作。

工作

SELECT * FROM T1 
     WHERE T1.ID IN (
     SELECT T1.ID FROM T1 
     JOIN T2 ON T2.PID = T1.ID WHERE T2.Email LIKE '%mitul%')

无法正常工作

DELETE FROM T1 
     WHERE T1.ID IN (
     SELECT T1.ID FROM T1 
     JOIN T2 ON T2.PID = T1.ID WHERE T2.Email LIKE '%mitul%')

DELETE FROM T1 
     JOIN T2 ON T2.PID = T1.ID WHERE T2.Email LIKE '%mitul%'

Answer 1

您可以在DELETE语句后提及表名或表别名：

DELETE T1
FROM T1 
JOIN T2 ON T2.PID = T1.ID 
WHERE T2.Email LIKE '%mitul%'

请在db<>fiddle上找到演示

如果要从两个表中删除匹配的条目，请在T1, T2语句后使用DELETE。

DELETE T1, T2
FROM T1 
JOIN T2 ON T2.PID = T1.ID 
WHERE T2.Email LIKE '%mitul%'

Demo for the same