今天有空总结了一下使用存储过程对GridView进行分页的4种写法(分别是使用Top关键字，临时表，临时表变量和SQL Server 2005 新加的Row_Number()函数)

if exists(select 1 from sys.objects where name = ''GetProductsCount'' and type = ''P'')
drop proc GetProductsCount
go
CREATE PROCEDURE GetProductsCount
as
select count(*) from products
go

--1.使用Top
if exists(select 1 from sys.objects where name = ''GetProductsByPage'' and type = ''P'')
drop proc GetProductsByPage
go
CREATE PROCEDURE GetProductsByPage
@PageNumber int,
@PageSize int
AS
declare @sql nvarchar(4000)
set @sql = ''select top '' + Convert(varchar, @PageSize)
+ '' * from products where productid not in (select top '' + Convert(varchar, (@PageNumber - 1) * @PageSize) + '' productid from products)''
exec sp_executesql @sql
go

--exec GetProductsByPage 1, 10
--exec GetProductsByPage 5, 10

--2.使用临时表
if exists(select 1 from sys.objects where name = ''GetProductsByPage'' and type = ''P'')
drop proc GetProductsByPage
go
CREATE PROCEDURE GetProductsByPage
@PageNumber int,
@PageSize int
AS
-- 创建临时表
CREATE TABLE #TempProducts
(
ID int IDENTITY PRIMARY KEY,
ProductID int,
ProductName varchar(40) ,
SupplierID int,
CategoryID int,
QuantityPerUnit nvarchar(20),
UnitPrice money,
UnitsInStock smallint,
UnitsOnOrder smallint,
ReorderLevel smallint,
Discontinued bit
)
-- 填充临时表
INSERT INTO #TempProducts
(ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued)
SELECT ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued
FROM Products

DECLARE @FromID int
DECLARE @ToID int
SET @FromID = ((@PageNumber - 1) * @PageSize) + 1
SET @ToID = @PageNumber * @PageSize

SELECT ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued
FROM #TempProducts
WHERE ID >= @FromID AND ID <= @ToID
go

--exec GetProductsByPage 1, 10
--exec GetProductsByPage 5, 10

--3.使用表变量
/*
为要分页的数据创建一个table变量,这个table变量里有一个作为主健的IDENTITY列.这样需要分页的每条记录在table变量里就和一个row index(通过IDENTITY列)关联起来了.一旦table变量产生,连接数据库表的SELECT语句就被执行,获取需要的记录.SET ROWCOUNT用来限制放到table变量里的记录的数量.
当SET ROWCOUNT的值指定为PageNumber * PageSize时,这个方法的效率取决于被请求的页数.对于比较前面的页来说– 比如开始几页的数据– 这种方法非常有效. 但是对接近尾部的页来说,这种方法的效率和默认分页时差不多
*/
if exists(select 1 from sys.objects where name = ''GetProductsByPage'' and type = ''P'')
drop proc GetProductsByPage
go
CREATE PROCEDURE GetProductsByPage
@PageNumber int,
@PageSize int
AS
DECLARE @TempProducts TABLE
(
ID int IDENTITY,
productid int
)
DECLARE @maxRows int
SET @maxRows = @PageNumber * @PageSize
--在返回指定的行数之后停止处理查询
SET ROWCOUNT @maxRows

INSERT INTO @TempProducts (productid)
SELECT productid
FR