doulan4371 2016-07-27 09:55
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如何在Mysql中获取所选行ID的最大日期

I have a scenario in which i want to get Maximum Date but not from Whole Table Just from Selected id but i failed.

Here is my table

enter image description here

I run This Query For get my selected id

SELECT * FROM `tbl_methodology` WHERE FIND_IN_SET(6, `col_select_corporate`)

and i got that result

enter image description here

From that result I want to get that record which have maximum Date

I try that query but it not working for me

SELECT * FROM `tbl_methodology` WHERE  id IN (1,5,7) AND `col_date` = (
    SELECT MAX(`col_date`)
    FROM `tbl_methodology`)

Can anyone help me??

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  • dourang6858 2016-07-27 09:59
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    Add the where clause twice and you should get the result you expected:

    SELECT * FROM `tbl_methodology` WHERE  id IN (1,5,7) AND `col_date` = (
        SELECT MAX(`col_date`)
        FROM `tbl_methodology` WHERE  id IN (1,5,7))
    

    And as i commented: it is very bad db design, to save values as CSV

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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