SQLServer 2008 新增 += 简写语法

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
插入后
StateId	StateName
5	WA
6	FL
7	NY
更新后
StateId	StateName
6	WA
7	FL
8	NY