Question

我有一张记录表：

----------------------------------
ID   |  UniqueId |  Name  | Result
----------------------------------
1       1           Test1   OK
2       1           Test1   Cancelled
3       1           Test1   OK
4       2           Test2   OK
5       2           Test2   OK
6       2           Test2   OK
7       2           Test2   OK
8       3           Test3   OK
9       3           Test3   OK

让我们说我不想检查UniqueId = 1的至少一行是否包含Result == Cancelled。要排除UniqueId = 1的记录，因为它已被取消。我怎样才能做到这一点？谢谢

Answer 1

SELECT id FROM mytable WHERE uniqueId = 1 AND result != 'Cancelled'

Answer 2

只需询问UniqueId = 1和Result != Cancelled

的行

SELECT ID FROM table WHERE UniqueId = 1 AND Result <> 'Cancelled' LIMIT 1

Answer 3

我是这样做的，但其他答案在语法方面要容易一些。

SELECT UniqueId, Name
FROM Table T
GROUP BY UniqueId, Name
HAVING Result != 'Cancelled'

Answer 4

SELECT t1.* from table as t1 where t1.UniqueId not in(select t.UniqueId from table as t 
where t.Result="Cancelled")

Mysql语句，如果至少有一行包含结果

4 个答案: