在单个MySQL查询中为所有列名设置“别名”

要为列名设置别名，语法如下：

select yourColumnName1 anyAliasName1,yourColumnName2 anyAliasName2 from yourTableName anyAliasName;

要了解上述语法，让我们创建一个表-

create table DemoTable2014 -> ( -> FirstName varchar(20), -> LastName varchar(20) -> );

使用插入命令在表中插入一些记录-

insert into DemoTable2014 values(John,Smith); insert into DemoTable2014 values(David,Miller); insert into DemoTable2014 values(John,Doe); insert into DemoTable2014 values(Chris,Brown);

使用select语句显示表中的所有记录-

select *from DemoTable2014;

这将产生以下输出-

+-----------+----------+ | FirstName | LastName | +-----------+----------+ | John | Smith | | David | Miller | | John | Doe | | Chris | Brown | +-----------+----------+ 4 rows in set (0.00 sec)

这是在单个MySQL查询中为列名设置“别名”的查询-

select FirstName StudentFirstName,LastName StudentLastName -> from DemoTable2014 tbl;

这将产生以下输出-

+------------------+-----------------+ | StudentFirstName | StudentLastName | +------------------+-----------------+ | John | Smith | | David | Miller | | John | Doe | | Chris | Brown | +------------------+-----------------+ 4 rows in set (0.00 sec)