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页: 1 当出现一些重复
原标题:My SQL Left join when have some duplicate
  • 时间:2012-01-14 01:03:11
  •  标签:
  • mysql

I try to write code but it work not the same. I want member_preinstall have 3000. The result of the code below is 3550. memberkohsamui.own have some duplicate. How can I make it just joint only one of memberkohsamui.own How can do that

SELECT
member_preinstall.own,
member_preinstall.Sname,
memberkohsamui.Sex,
memberkohsamui.Sname,
member_preinstall.Ssurname,
member_preinstall.tambol,
memberkohsamui.dateofbirth
FROM
member_preinstall LEFT JOIN memberkohsamui ON
member_preinstall.own =memberkohsamui.own
最佳回答

增加<条码>

SELECT
    DISTINCT member_preinstall.own,
    member_preinstall.Sname,
    memberkohsamui.Sex,
    memberkohsamui.Sname,
    member_preinstall.Ssurname,
    member_preinstall.tambol,
    memberkohsamui.dateofbirth
FROM
    member_preinstall LEFT JOIN memberkohsamui ON
    member_preinstall.own =memberkohsamui.own
问题回答

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