2020-02-16 标签:sql,平均数,统计,实现,代码,如下,select,cast,sum,score,comments,count,decimal,toysgogo,aboutid,81,table,product

实现代码如下：SELECT CAST(SUM(score_comments_) / COUNT(*) AS decimal) AS score FROM Comments_Toysgogo_ WHERE (aboutid_comments_ = 81) AND (table_comments_ =