mysql union all not working

將下面的MySQL代碼和ORDER BY一起使用不起作用。我搜索並嘗試了各種版本的代碼（UNION，UNION ALL，括號，沒有括號，SELECT包裝所有SELECT UNION ALLs然後排序） - 沒有運氣。還有其他建議嗎？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

來源

2014-02-11 spiderling

這是您的order by：

ORDER BY 'ListPrice' DESC

它是由一個常量字符串排序。試試這個：

ORDER BY ListPrice DESC

而且，將來只能使用單引號字符串和日期常量值。永遠不要爲數據庫中的事物名稱。

來源

2014-02-11 21:57:58

謝謝！對不起，如果這是一個愚蠢的問題，但你在代碼中提到的單引號和它們應該如何使用？ – spiderling

@ user3299111。。。單引號是出現在ListPrice周圍的''''。這會導致列名被視爲一個常量值，這對排序沒有用處。 –

因此，如果名稱中沒有空格，我不需要任何引號。 – spiderling

mysql union all not working

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