MySQL Distinct選擇與替換

Question

我有以下mySql select語句，它返回以下結果並努力獲取我想要的結果。

 select `tvshow`.`idShow` AS `idShow`,`tvshow`.`c00` AS `ShowName`,
         if(count(distinct `episode`.`c12`),
         count(distinct `episode`.`c12`),0) AS `TotalSeasons`,
        if(count(`episode`.`c12`),count(`episode`.`c12`),0) AS `TotalEpisodeCount`
    from
        ((((`tvshow`
        left join `tvshowlinkpath` ON ((`tvshowlinkpath`.`idShow` = `tvshow`.`idShow`)))
        left join `path` ON ((`path`.`idPath` = `tvshowlinkpath`.`idPath`)))
        left join `episode` ON ((`episode`.`idShow` = `tvshow`.`idShow`)))
        left join `files` ON ((`files`.`idFile` = `episode`.`idFile`)))
    group by `tvshow`.`idShow`
    having (count(`episode`.`c12`) > 0)

選擇結果

我正在嘗試獲取第4欄，其中列出了各個季節，例如“第1季，第2季，第3季”

我可以通過運行以下選擇獲取所需的數據

select distinct c12 from episode where idShow = 1

它返回以下內容。

所以我想我可以使用替換將結果更改為“ Season1”，但不確定如何只返回一個包含“ Seasin1，Season2，Season3”的字符串，然后將其添加到頂部的select語句中。查看並將其組合在一起？

我試圖獲得的結果 （為此使用了Photoshop，以便您可以理解）

Answer 1

只需將GROUP_CONCAT(episode.c12)添加為附加列：

select `tvshow`.`idShow` AS `idShow`,`tvshow`.`c00` AS `ShowName`,
         if(count(distinct `episode`.`c12`),
         count(distinct `episode`.`c12`),0) AS `TotalSeasons`,
        if(count(`episode`.`c12`),count(`episode`.`c12`),0) AS `TotalEpisodeCount`,
        `GROUP_CONCAT(episode.c12)` as `Seasons`
    from
        ((((`tvshow`
        left join `tvshowlinkpath` ON ((`tvshowlinkpath`.`idShow` = `tvshow`.`idShow`)))
        left join `path` ON ((`path`.`idPath` = `tvshowlinkpath`.`idPath`)))
        left join `episode` ON ((`episode`.`idShow` = `tvshow`.`idShow`)))
        left join `files` ON ((`files`.`idFile` = `episode`.`idFile`)))
    group by `tvshow`.`idShow`
    having (count(`episode`.`c12`) > 0)

有關此MySQL特定功能的文檔，請參見http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html#function_group-concat 。