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特定のデータセットが収集されるサイトがあります。これは旅行代理店のウェブサイトです。宿泊施設がまだ予約可能かどうかを判断する必要があります。検索フィルター（宛先、分類、施設など）を選択しないと、機能するクエリが表示されます。見た目は次のとおりです。

SELECT `accommodation` . *
FROM `accommodation`
INNER JOIN (

SELECT `fk_accommodation` , MAX( `dateuntil` ) - ( `releasedays` *60 *60 *24 ) AS `LatestBookableTimestamp`
FROM `priceperiod`
GROUP BY `fk_accommodation`
) AS `pp` ON ( `pp`.`fk_accommodation` = `accommodation`.`id` )
WHERE `pp`.`LatestBookableTimestamp` > UNIX_TIMESTAMP( )
AND `accommodation`.`fk_country` <>0
AND `accommodation`.`classification` >=0
AND `accommodation`.`type` = 'Z'

しかし、フィルター（この場合は「ターゲット」フィルター（子供、アクティブ、休憩、ウィンタースポーツなど）を選択すると、次のクエリが表示されます。

SELECT `accommodation` . *
FROM `accommodation` , `link_at`
INNER JOIN (

SELECT `fk_accommodation` , MAX( `dateuntil` ) - ( `releasedays` *60 *60 *24 ) AS `LatestBookableTimestamp`
FROM `priceperiod`
GROUP BY `fk_accommodation`
) AS `pp` ON ( `pp`.`fk_accommodation` = `accommodation`.`id` )
WHERE `pp`.`LatestBookableTimestamp` > UNIX_TIMESTAMP( )
AND `accommodation`.`fk_country` <>0
AND `link_at`.`fk_target`
IN ( 10, 2 )
AND `link_at`.`fk_accommodation` = `accommodation`.`id`
AND `accommodation`.`classification` >=0
AND `accommodation`.`type` = 'Z'

このクエリを実行すると、次のエラーが発生します#1054 - Unknown column 'accommodation.id' in 'on clause'。これは、FROM句で別のテーブルが使用されているためだと思います。複数のテーブルが照会されたときにINNERJOINを使用する方法について誰かが考えていますか？

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1 に答える 1

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完全にフィルタリングされたクエリによって引き起こされる困難...

SELECT 
    `accommodation`.* 
FROM 
    `accommodation` , 
    `link_at` , 
    `priceperiod` , 
    `link_af` 
INNER JOIN ( 
    SELECT 
        `fk_accommodation`, 
        MAX( `dateuntil` ) - ( `releasedays` *60 *60 *24 ) AS `LatestBookableTimestamp` 
    FROM 
        `priceperiod` 
    GROUP BY 
        `fk_accommodation` 
    ) AS `pp` 
    ON (`pp`.`fk_accommodation` = `accommodation`.`id`) 
WHERE 
    `pp`.`LatestBookableTimestamp` > UNIX_TIMESTAMP() 
AND 
    `accommodation`.`fk_country` <> 0 
AND 
    `link_at`.`fk_target` IN (10 , 2 , 1 , 13 , 6 , 3) 
AND 
    `link_at`.`fk_accommodation` = `accommodation`.`id` 
AND 
    ( 
        ( 
            `priceperiod`.`haslogies` = '1' 
        AND 
            ( `datefrom` >= 1288216378 
        OR 
            `dateuntil` <= 1288216378 
            )
         AND 
            `accommodation`.`id` = `priceperiod`.`fk_accommodation` 
        ) 
        OR 
        (
             `priceperiod`.`haslogiesbreakfast` = '1' 
        AND 
        ( 
            `datefrom` >= 1288216378 
        OR 
            `dateuntil` <= 1288216378 
        ) 
        AND 
            `accommodation`.`id` = `priceperiod`.`fk_accommodation` 
        ) 
        OR 
        ( 
            `priceperiod`.`hashalfpension` = '1' 
        AND 
        ( 
            `datefrom` >= 1288216378 
        OR 
            `dateuntil` <= 1288216378 
        ) 
        AND 
        `accommodation`.`id` = `priceperiod`.`fk_accommodation` 
    ) 
    OR 
    ( 
        `priceperiod`.`hasfullpension` = '1' 
        AND 
        ( 
            `datefrom` >= 1288216378 
        OR 
            `dateuntil` <= 1288216378 
        ) 
        AND 
        `accommodation`.`id` = `priceperiod`.`fk_accommodation` 
    ) 
    OR 
    ( 
        `priceperiod`.`hasallinclusive` = '1' 
        AND 
        ( 
            `datefrom` >= 1288216378 
        OR 
            `dateuntil` <= 1288216378 
        ) 
        AND 
            `accommodation`.`id` = `priceperiod`.`fk_accommodation` 
        ) 
    ) 
    AND 
        `accommodation`.`id` IN 
        (
        SELECT 
            `fk_accommodation` 
        FROM 
            `link_af` 
        WHERE 
        (
            `fk_facility` = 13 OR 
            `fk_facility` = 14 OR 
            `fk_facility` = 7 OR 
            `fk_facility` = 27 OR 
            `fk_facility` = 37 OR 
            `fk_facility` = 17 OR 
            `fk_facility` = 24 OR 
            `fk_facility` = 3
        ) 
        GROUP BY 
            `fk_accommodation` 
        HAVING count( fk_accommodation ) =8) 
        AND 
        ( 
            ( 
                `accommodation`.`fk_accommodationtype` = 14 
            ) 
            OR 
            ( 
                `accommodation`.`fk_accommodationtype` = 18 
            ) 
            OR 
            ( 
                `accommodation`.`fk_accommodationtype` = 16 
            ) 
            OR 
            ( 
                `accommodation`.`fk_accommodationtype` = 19 
            ) 
            OR 
            (
                 `accommodation`.`fk_accommodationtype` = 17 
            ) 
        ) 
        AND 
        (
            `accommodation`.`isspecialoffer` = 1 
        OR 
            `accommodation`.`istip` = 1
        ) 
        AND 
            `accommodation`.`classification` >= 4 
        AND `accommodation`.`type` = 'Z'
于 2010-10-27T22:01:26.030 に答える