SQL Server 2005 实用例子

获取最后插入的一条记录：scope_indentity()

scope_indentity() 返回插入到同一作用域中（存储过程,.......）的indentity列内的最后一个indentity值

declare @dt table

( _id int identity(1,1),

_name char(10)

)

insert into @dt (_name) values('scottxu')

insert into @dt (_name) values('psg')

insert into @dt (_name) values('nanfangxiaogui')

select * from @dt where _id=scope_identity()
结果：

3 nanfangxiaogui

高性能分页：ROW_NUMBER()

以下示例将返回行号为

50

到

60

（含）的行，并以

OrderDate

排序。

USE AdventureWorks;

GO

WITH OrderedOrders AS

(SELECT SalesOrderID, OrderDate,

ROW_NUMBER() OVER (order by OrderDate)as RowNumber

FROM Sales.SalesOrderHeader )

SELECT *

FROM OrderedOrders

WHERE RowNumber between 50 and 60;

高效获取记录数：sysindexes

select rows from sysindexes where id = object_id('tablename') and indid in (0,1)