mysql - 删除返回的 SQL 结果

Question

如何删除以下查询返回的记录？

Select HL.User from "Hobby List" HL 
INNER JOIN (Select SUBSTRING(Code,1,10) Code,Count(SUBSTRING(CODE,1,10))
AS Occurances from Patient where length(Patient.Code) > 10
Group By SUBSTRING(Code,1,10)
Having COUNT(SUBSTRING(Code,1,10)) > 1) P
on SUBSTRING(HL.User,1,10) = P.Code
Group By HL.User

我尝试使用“如果存在则删除”方法来删除记录，这要么是错误的，要么是我没有正确执行，因为它删除了表中的所有记录，而不仅仅是我的查询返回的记录。

谢谢

Answer 1

DELETE FROM "Hobby List" HL WHERE HL.User IN (your query here)

这应该做得很好，我在其他场景中使用过很多次。

http://www.w3schools.com/sql/sql_in.asp

Answer 2

试试这个：

DELETE FROM 'Hobby List'
WHERE User  IN 
(

Select HL.User from "Hobby List" HL 
INNER JOIN (Select SUBSTRING(Code,1,10) Code,Count(SUBSTRING(CODE,1,10))
AS Occurances from Patient where length(Patient.Code) > 10
Group By SUBSTRING(Code,1,10)
Having COUNT(SUBSTRING(Code,1,10)) > 1) P
on SUBSTRING(HL.User,1,10) = P.Code
Group By HL.User

)