可以快速上手的开发文档
DoingINTERSECTandMINUSinMySQLDoinganINTERSECTAnINTERSECTissimplyaninnerjoinwherewecomparethetuplesofonetablewiththoseoft..
可以用SQL实现同样的功能,就是麻烦了点。droptablet1;droptablet2;createtablet1(idintprimarykey,nickn..