在一列中对两列进行排序

Question

假设我有一张桌子 - 人

id | First Name  | Last Name
-----------------------------'
1    AA             BB
2    EE             DD
3    CC             FF

在这里，我想在1列中显示名字和姓氏。

Such that output would be 
----------------------
AA
BB
CC
DD
EE
FF

Can i also display it as 
------------------
1 AA
1 BB
3 CC
2 DD
2 EE
3 FF

使用Mysql查询??

Answer 1

您正在寻找nginx -V ：

1.8

编辑：

修改后的问题：

union all

Answer 2

如果要根据ID对结果进行排序。然后，

<强>查询

select t.name from(
    select id, firstname as name
    from tblPersons
    union all
    select id, lastname as name
    from tblPersons
)t
order by t.id, t.name;

Answer 3

select * from
(
select first_name from person 

union 

select last_name from person
)
t 
order by first_name