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如何在Mysql检查是否平等?
原标题:How to check not equalto in Mysql?
  • 时间:2010-09-24 07:05:04
  •  标签:
  • mysql

I have two tables.One table contain the values
+---------+
Users
---------+
A
B
C
D
E
F
+----------+
And in another table I am having
+--------+
Active
+--------+
C
D
G
H
I
`+--------+

From the two table I need to get the Users only those who are not in the Active.For this the expected result is
+------+
Result
+------+
A
B
E
F
+-------+

最佳回答
Select * from users u 
where not exists (
     select 1 from active a where u.Field  = a.Field
 )
问题回答

试图这样做(代之以你的田地名称):

SELECT
  *
FROM
  users u
WHERE
  id NOT IN (SELECT id FROM active WHERE id = u.id)




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