SELECT FROM attraction aJOIN attraction_type_relation r ON aattraction_id = rattraction_idJOIN type t ON rtype_id = ttype_id;改为不查出关联字段的sql语句
SELECT a., t. FROM attraction a JOIN attraction_type_relation r ON a.attraction_id = r.attraction_id JOIN type t ON r.type_id = t.type_id;
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