SQL学习笔记三select语句的各种形式

Select  *  from  T_Employee

 

 

select FName,FAge from T_Employee

 

 

select FName from T_Employee where FSalary < 5000

 

 

select FName as 姓名,FAge as 年龄,FSalary as 月薪from T_Employee where FSalary < 5000

 

 

select FName as 姓名,FAge as 年龄,FSalary as 月薪,getdate() as 当前时间from T_Employee