不使用 AS

Created: November-22, 2018

此语法类似于使用 AS 关键字。我们不必使用 AS 关键字

CREATE TABLE AliasNameDemo (id INT,firstname VARCHAR(20),lastname VARCHAR(20)) 

INSERT INTO AliasNameDemo
VALUES      (1,'MyFirstName','MyLastName') 

SELECT FirstName +' '+ LastName FullName
FROM   AliasNameDemo