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Laravel 5，连接子查询中的派生表？
我有这个查询： SELECT * FROM blog LEFT JOIN ( SELECT blog_id, AVG(value) as blog_rating FROM blog_ratings GROUP BY (blog_id) ) T ON T.blog_id = b...
我有这个查询： SELECT * FROM blog LEFT JOIN ( SELECT blog_id, AVG(value) as blog_rating FROM blog_ratings GROUP BY (blog_id) ) T ON T.blog_id = b...