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

我试图通过使用“如果存在的删除”方法删除记录，这种方法错误或者我没有正确执行，因为它删除了表中的所有记录而不是我查询返回的记录。 / p>

谢谢

Answer 1

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

这应该做得很好，我在其他场景中已经使用了很多次。

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

)

删除返回的SQL结果

2 个答案: