select返回一个固定值SELECT '固定值 ' as rmb FROM TABLENAME;版权声明:本文为u011171255原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明。原文链接:https://blog.csdn.net/u011171255/article/details/70255670