douchen5971 2011-02-20 19:57
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我需要MySQL SELECT查询的帮助

I need help to write a MySQL query that would do the following for me:

It would select the last row from a certain column. Let's say the table name is 'mysite_codes' and the column name is 'code', there are many rows in this column, but I want the query to take the last added one and get my back one result in PHP (LIMIT 1 thing).

Would anyone please help me with this?

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  • douquanjie9326 2011-02-20 20:00
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    MySQL tables have no inherent sorting. If you want "the last added one" then you'll need an AUTO_INCREMENTing column like id.

    Then you can write.

    SELECT `code` FROM `mysite_codes` ORDER BY `id` DESC LIMIT 1
    

    to get just the row with the highest id value.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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