sql中嵌套多重if语句if (jm.level=1,'省级审批',if(jm.level=2,'市级审批',if(jm.level=3,'县级审批', '-'))) as level版权声明：本文为leese233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/leese233/article/details/127628883