SQL REGEXP和JOIN - 如何优化

Question

我正在尝试优化此查询 - 目前需要大约10秒才能完成。

我认为减速来自REGEXP - all_artists字段中的数据格式为artist1 | artist2 | artist3

SELECT * FROM releases WHERE (all_artists REGEXP 
    (SELECT GROUP_CONCAT(releases.artist SEPARATOR '|') 
        FROM releases 
        INNER JOIN charts_extended 
        ON charts_extended.release_id=releases.id 
        WHERE charts_extended.artist='Quickinho' 
        AND releases.all_artists!='Various Artists') 

    OR label_no_country IN 
    (SELECT releases.label_no_country 
    FROM releases 
    INNER JOIN charts_extended 
    ON charts_extended.release_id=releases.id 
    WHERE charts_extended.artist='Quickinho')) 

    AND releases.id NOT IN (SELECT release_id FROM charts_extended WHERE artist='Quickinho') ORDER BY date DESC LIMIT 0,102