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[Err] 1222 - The used SELECT statements have a different number of columns
1、错误描述
- [Err] 1222 - The used SELECT statements have a different number of columns
- [SQL]SELECT t.id,t.eage,t.ename,t.esex FROM emp t
- UNION ALL
- SELECT s.age,s.`name`,s.id FROM t_stu_info s;
- [Err] 1222 - The used SELECT statements have a different number of columns
2、错误原因
- SELECT t.id,t.eage,t.ename,t.esex FROM emp t
- UNION ALL
- SELECT s.age,s.`name`,s.id FROM t_stu_info s;
3、解决办法
(1)根据需求,下面一个select添加个字段
(2)第一个select中删除一个字段