mysql union all not working

将下面的MySQL代码和ORDER BY一起使用不起作用。我搜索并尝试了各种版本的代码（UNION，UNION ALL，括号，没有括号，SELECT包装所有SELECT UNION ALLs然后排序） - 没有运气。还有其他建议吗？mysql union all not working

 (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='res' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM res_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    UNION ALL 

    (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='con' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM con_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    UNION ALL 

    (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='mul' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM mul_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    UNION ALL 

    (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='rnt' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM rnt_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    UNION ALL 

    (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='ici' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM ici_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    UNION ALL 

    (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='far' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM far_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    UNION ALL 

    (SELECT FORMAT(lt.`rets_111`, 0) AS 'ListPrice', lt.`rets_128` AS 'MlsNumber', lt.`rets_13` AS 'Address', lt.`rets_2044` AS 'PublicRemarks', lt.`rets_sysid`, @real_estate_type:='lot' AS real_estate_type, 
    lt.`rets_2362` AS 'OpenHouseDate1', lt.`rets_2364` AS 'OpenHouseStartTime1', lt.`rets_2366` AS 'OpenHouseEndTime1', lt.`rets_2370` AS 'DisplayOpenHouse1', 
    lt.`rets_2372` AS 'OpenHouseDate2', lt.`rets_2374` AS 'OpenHouseStartTime2', lt.`rets_2376` AS 'OpenHouseEndTime2', lt.`rets_2380` AS 'DisplayOpenHouse2' 
    FROM lot_listings AS lt 
    WHERE lt.`rets_32` IN ('AGENT1', 'AGENT2') OR lt.`rets_2337` IN ('AGENT1', 'AGENT2') OR lt.`rets_1836` IN ('AGENT1', 'AGENT2')) 

    ORDER BY 'ListPrice' DESC

来源

2014-02-11 spiderling

这是您的order by：

ORDER BY 'ListPrice' DESC

它是由一个常量字符串排序。试试这个：

ORDER BY ListPrice DESC

而且，将来只能使用单引号字符串和日期常量值。永远不要为数据库中的事物名称。

来源

2014-02-11 21:57:58

谢谢！对不起，如果这是一个愚蠢的问题，但你在代码中提到的单引号和它们应该如何使用？ – spiderling

@ user3299111。。。单引号是出现在ListPrice周围的''''。这会导致列名被视为一个常量值，这对排序没有用处。 –

因此，如果名称中没有空格，我不需要任何引号。 – spiderling

mysql union all not working

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