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摘要: 删除表重复数据 (t1表中有重复数据)1、使用distinct create table t2 as select * from t1;create table tmp_t2 as select distinct * from t2;drop table t2;alter table tmp_t2 ... 阅读全文
posted @ 2015-01-28 14:10 uzipi 阅读(907) 评论(0) 推荐(0) 编辑