摘要: select t.*, b.bummc from t_hq_ryxx t,t_hq_bm b where t.bum = b.bumbm;select * from t_hq_ryxx t full join t_hq_bm b on t.bum > b.bumbm;select * from t_... 阅读全文
posted @ 2015-10-29 22:21 呼哧呼哧 阅读(180) 评论(0) 推荐(0) 编辑