08 2014 档案

distinct group by 去重查询
摘要：select * from dc_restaurants; 31 select DISTINCT (restaurant_name),id from dc_restaurants; 31 （会按照id和 restaurant_name 联合 去重 ）select DISTINCT (restaur... 阅读全文

posted @ 2014-08-18 10:16 远方的人 阅读(1117) 评论(0) 推荐(0)

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