MySQL查询中的未知列ID

Question

有人可以帮助我我有2个MySQL查询，当我尝试运行它们时会得到未知的列ID。我想补充一点，我从2005年的SQLServer将这个数据库MySQL和他们在SQL Server 2005中

这里是他们的1运行良好：

SELECT DISTINCT g.id AS `genre` 
    FROM media_playlist_sequence MPS 
    INNER JOIN media    M ON M.`key`   = MPS.media_key 
    INNER JOIN media_playlists  MP ON MP.`key`   = MPS.playlist_key 
    INNER JOIN node_media_playlist NMP ON NMP.playlist_key = MP.`key` 
    INNER JOIN nodes    N ON N.`key`   = NMP.node_key 
    INNER JOIN media_files   MF ON MF.media_key  = M.`key` 
    INNER JOIN media_locations  ML ON ML.media_file_key = MF.media_file_key 
     AND ML.node_key = n.`key` 
    INNER JOIN media_genres  MG ON MG.media_key  = M.`key` 
    INNER JOIN genres    G ON G.`key`   = MG.genre_key 
WHERE M.is_ready = 1  
    AND MP.id = 'Channels'  
    AND N.id = 'VIC-WIN7' 
    AND mf.is_quad_image = 0 

Answer 1

我的猜测是，这是一个区分大小写的问题。 MySQL可以默认区分大小写，而SQL Server不区分大小写。