摘要：
/*=======================================Description: 用SQL实现笛卡尔积Author: CCdate: 2011.11.03=======================================*/USE TestGOSELECT * FROM l; --如下图lSELECT * FROM m; --如下图m--交叉连接实现，lmSELECT * FROM l CROSS JOIN m;l表lid name----------- --------------------101 北京102 太原101 N... 阅读全文
