SQLServer 2008 新增T-SQL 简写语法

时间:2020-12-16 人气:0

1.定义变量时可以直接赋值
DECLARE @Id int = 5
2.Insert 语句可以一次插入多行数据
INSERT INTO StateList VALUES(@Id, 'WA'), (@Id + 1, 'FL'), (@Id + 2, 'NY')
3.支持+=操作符
SET StateId += 1
完整示例如下：

复制代码代码如下:

CREATE TABLE StateList(StateId int, StateName char(2)) 
GO 
-- Declare variable and assign a value in a single statement 
DECLARE @Id int = 5 
-- Insert multiple rows in a single statement with IDs 5, 6, and 7 
INSERT INTO StateList VALUES(@Id, 'WA'), (@Id + 1, 'FL'), (@Id + 2, 'NY') 
-- Use compound assignment operator to increment ID values to 6, 7, and 8 
UPDATE StateList 
SET StateId += 1 
-- View the results 
SELECT * FROM StateList

结果集为：

StateId StateName
------- ---------
6 WA
7 FL
8 NY

(3 row(s) affected)

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