Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
有没有一种方法可以创建具有奇数字段的联合查询。联合查询的前半部分只有 5 个字段,后半部分将有 7 个字段
不,但你可以有虚构的领域:
SELECT RealField1, RealField2, RealField3, RealField4 FROM Table UNION ALL SELECT Null As RealField1, Null As RealField2, RealField3, RealField4 FROM Table