SQL Server 2008 新增T-SQL 简写语法

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：

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)