douren6035 2015-10-30 22:43
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带有内连接的UNION SELECT表和带有“ALIAS”的GET值

So I have 2 tables, Matches and Teams, what I want to do is get some values from the match and Inner join "Teams" to get the names of both teams and add them to a php array later on (getting it all in one sql)

Matches
- IDMatch
- IDLocalTeam
- IDVisitorTeam
- Time
- Half
- Stopped
Teams
- IDTeam
- name

What I have by now is

$query = "SELECT * FROM `Matches`
          INNER JOIN `Teams` ON `Matches`.IDLocalTeam = `Teams`.IDTeam 
          UNION SELECT * FROM `Matches` INNER JOIN `Teams` 
          ON `Matches`.IDVisitorTeam = `Teams`.IDTeam  
          ORDER BY IDMatch DESC;";

If someone could help me it would be great! Thanks alot

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1条回答 默认 最新

  • douxuanjie2692 2015-10-30 22:52
    关注

    Wouldn't it be easier to use INNER JOIN twice? It's definitely quicker way of doing joins anyway.

    SELECT 
        * 
    FROM 
        `Matches` m
    INNER JOIN `Teams` t1
        ON m.IDLocalTeam = t1.IDTeam
    INNER JOIN `Teams` t2
        ON m.IDVisitorTeam = t2.IDTeam 
    ORDER BY 
        m.IDMatch DESC;
    

    Also start using aliases instead of table names to identify fields in query, it will SQL much smaller.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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