mysql里一条包含分组，排序，取前n条的sql语句如下
select create_time,price,sum(num) num from t1 WHERE sid="a" AND
rid="b" GROUP BY price ORDER BY price ASC,create_time A...
【mysql】 【SQL】 【数据库】 【排序】 【BY】 【Group】 【KDB】 …
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Jun
17
2018