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SQL存储过程分页

2012年10月27日 ⁄ 综合 ⁄ 共 3006字 ⁄ 字号 评论关闭

一,常用的存储过程

CREATE PROCEDURE  sp_GetRecordByPageOrder

@tblName varchar(255)='wdf1', -- 表名

@fldName varchar(1000) = '*', -- 需要返回的列

@OrderfldName varchar(255)='userid', -- 排序的字段名

@PageSize int = 10, -- 页尺寸

@PageIndex int = 1, -- 页码

@IsReCount bit = 0, -- 返回记录总数, 非 0 值则返回

@OrderType bit = 0, -- 设置排序类型, 非 0 值则降序

@strWhere varchar(1500) = '' -- 查询条件 (注意: 不要加 where)

AS

declare @strSQL varchar(5000) -- 主语句

declare @strTmp varchar(110) -- 临时变量

declare @strOrder varchar(400) -- 排序类型

if @IsReCount != 0

begin

if @strWhere !=''

set @strSQL = 'select count(*) as Total from [' + @tblName + '] where '+@strWhere

else

set @strSQL = 'select count(*) as Total from [' + @tblName + ']'

end

--以上代码的意思是如果@IsReCount传递过来的不是0,就执行总数统计。以下的所有代码都是@IsReCount为0的情况

else

begin

if @OrderType != 0

begin

set @strTmp = '<(select min'

set @strOrder = ' order by [' + @OrderfldName +'] desc'

--如果@OrderType不是0,就执行降序,这句很重要!

end

else

begin

set @strTmp = '>(select max'

set @strOrder = ' order by [' + @OrderfldName +'] asc'

end

if @PageIndex = 1

begin

if @strWhere != ''

set @strSQL = 'select top ' + str(@PageSize) +' '+@fldName+ ' from [' + @tblName + '] where ' + @strWhere + ' ' + @strOrder

else

set @strSQL = 'select top ' + str(@PageSize) +' '+@fldName+ ' from ['+ @tblName + '] '+ @strOrder

--如果是第一页就执行以上代码,这样会加快执行速度

end

else

begin

--以下代码赋予了@strSQL以真正执行的SQL代码

set @strSQL = 'select top ' + str(@PageSize) +' '+@fldName+ ' from ['

+ @tblName + '] where [' + @OrderfldName + ']' + @strTmp + '(['+ @OrderfldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @OrderfldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)'+ @strOrder

if @strWhere != ''

set @strSQL = 'select top ' + str(@PageSize) +' '+@fldName+ ' from ['

+ @tblName + '] where [' + @OrderfldName + ']' + @strTmp + '(['

+ @OrderfldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['

+ @OrderfldName + '] from [' + @tblName + '] where ' + @strWhere + ' '

+ @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder

end

end

exec (@strSQL)
GO

二、在SQL server 2005 中 多了个Row_Number() over (order by ID DESC)语句,使分页更加简单了,

意思是生成一个顺序的行号,而他生成顺序的标准,就是后面紧跟的over(order by ID Desc)

DECLARE @rows_per_page AS INTEGER
DECLARE @current_page AS INTEGER
DECLARE @total_pages AS INTEGER
DECLARE @start_item AS INTEGER
DECLARE @items_count AS INTEGER
-- 设置每页的行数
SET @rows_per_page = 10
-- 设置要显示的页号(从1开始)
SET @current_page = 3
SELECT @total_pages = COUNT(*) / @rows_per_page + 1,
 @items_count= COUNT(*)
 FROM BarefootIndex;--表名(这是修改的地方)
--计算此页中从第几个开始显示
SET @start_item = @rows_per_page * (@current_page - 1)
select * from
(
 select ROW_NUMBER() OVER (order by ID) as item--用什么排序(返回正在显示第几条)
  ,@items_count AS items_count --一共有多少条
  ,@current_page AS current_page  --当前页
  ,@total_pages AS total_pages --一共多少页
  ,* from BarefootIndex--表名(这是修改的地方)
) as T
where T.item >= @start_item + 1
AND T.item <= @start_item + @rows_per_page

三、如果在sql server 2005 之前运行 我这儿提供一个方法获得行号
--有表Test_Student: id int,name varchar(500),age int,sex bit
declare @t table(row int,id int,[name] varchar(500),age int,sex bit)/*定义和Test_Student结构一样的表变量,但多一列int类型记录行号row*/
declare @rt table(row int,id int,[name] varchar(500),age int,sex bit))/*定义和Test_Student结构一样的表变量,但多一列int类型记录行号row*/
insert into @t select 0,id,[name],age,sex from Test_Student order by age

declare @count int
select @count=count(*) from Test_Student
declare @r int

set @r=1
while @r<=@count
begin
insert into @rt  select top 1 @r,id,[name],age,sex from @t
delete from @t where id=(select top 1 id from @t)
set @r=@r+1
end

select * from @rt

 

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