SQL2005支持的两条新语法

1. OUTPUT ... INTO

用于将一条记录从表一移动到表二时非常好用，常见于备份记录的应用

例一：

DELETE [TableUseing]
OUTPUT Deleted.*
INTO [TableBak]

例二：（用于移动时修改某字段的值）

DELETE [TableUseing]
OUTPUT Deleted.Field1, Deleted.Field2, GETDATE()
INTO [TableBak]

2.表变量

用于存储临时的查询结果

DECLARE @tmp TABLE (ID INT, CITY NVARCHAR(50))
INSERT INTO @tmp
SELECT MIN(ID), CITY
FROM [TableTest] WITH(NOCLOCK)
GROUP BY CITY