摘要:
1. --distinct去重,like模糊查询 select distinct * from table1 where table1.id like '%123%' 2.要查询整个表,并添加一个虚列,列名为Gender,填充值为null,可用如下语句: select *,null Gender f 阅读全文
posted @ 2018-06-20 14:20 yacbo 阅读(886) 评论(0) 推荐(0) 编辑
posted @ 2018-06-20 14:20 yacbo 阅读(886) 评论(0) 推荐(0) 编辑
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