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1，sql查询的几个结果集合并，union all
select * from student where ...
union all
select * from student where ...
**
sql的一些贝壳
有问题在公众号【清汤袭人】找我，时常冒出各种傻问题，然一通百通，其乐无穷，一起探讨
**
1，sql查询的几个结果集合并，union all
select * from student where ...
union all
select * from student where ...
**