摘要: 示例表:select * from tParentselect * from tChild内连接(join 或者inner join ): 只有两个表相匹配的行才能在结果集中出现 select * from tParent p inner join tChild c on c.cPId=p.pIds... 阅读全文
posted @ 2015-12-31 16:35 trison wong 阅读(315) 评论(0) 推荐(0) 编辑