[英]SQL query with max date instance
Given the following table: 给出下表:
DATE |ARRANGMENT_STATUS | CUSTOMER
----------+------------------+-------
2017-01-01|BROKEN |0001
2017-02-01|OK |0001
2017-03-01|BROKEN |0001
How can I query the DB so result will give me the latest broken status( 2017-03-01) - I dont want to get broken status if they are not the latest ( 2017-01-01) 我如何查询数据库,所以结果将给我最新的损坏状态(2017-03-01)-如果它们不是最新的,我不想得到损坏的状态(2017-01-01)
Hope it makes sence, thanks 希望有道理,谢谢
If you want all information in the row, you can use order by
and limit
: 如果要在行中显示所有信息,则可以使用
order by
和limit
:
select t.*
from t
where t.arrangement_status = 'Broken'
order by t.date desc
limit 1;
If you only want the date, the JNevill's solution is fine. 如果您只想要日期,JNevill的解决方案就可以了。
获取该状态的max(date):
SELECT max(date) FROM table WHERE arrangement_status = 'Broken'
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