摘要: 查找b表中不在a表中的数据select*from#bexceptselect*from#a查找a,b两个表的交集select*from#bintersectselect*from#a阅读全文

摘要: 用法：<!--[if lt IE 8]>code here<![endif]-->解释语句如下： gt = selects greater than(高于) lt = selects less than(低于) gte = selects greater than or equal to(>=) lte = selects less than or equal to(...阅读全文