高效分页存储过程

分页存储过程很多，高效的没有几个：

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--用途：分页存储过程(对有主键的表效率极高)

--说明：

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CREATE PROCEDURE UP_GetRecordByPage

@tblName varchar(255), -- 表名

@fldName varchar(255), -- 主键字段名

@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(1000) = '' -- 查询条件 (注意: 不要加 where)

AS

declare @strSQL varchar(6000) -- 主语句

declare @strTmp varchar(100) -- 临时变量

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

if @OrderType != 0

begin

set @strTmp = '<(select min'

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

end

else

begin

set @strTmp = '>(select max'

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

end

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

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

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

+ @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)'

+ @strOrder

if @strWhere != ''

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

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

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

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

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

if @PageIndex = 1

begin

set @strTmp =''

if @strWhere != ''

set @strTmp = ' where ' + @strWhere

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

+ @tblName + ']' + @strTmp + ' ' + @strOrder

end

if @IsReCount != 0

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

exec (@strSQL)

GO

前几天又有一个新的分页存储，据说要比我现在（不是上面那个）用的分页存储过程的效率要高，我比较怀疑，但是没有测试。一并贴出来

CREATE PROCEDURE WapWapIndexGetRows

(

@PageIndex int,

@PageSize int,

@RecordCount int out,

@PageCount int out,

@type int

)

AS

declare @sqlstr nvarchar (1000)

select @RecordCount = count(*) from WapIndex where Mediatype=@type

set @PageCount = ceiling(@RecordCount*1.0/@PageSize)

if(@PageIndex=0 or @PageCount<=1)

set @sqlstr = ' select top ' + str(@PageSize) +

' * from WapIndex where mediatype= '+str(@type) +' order by addtime desc '

else if(@PageIndex = @PageCount - 1)

set @sqlstr = ' select * from (select top ' + str(@RecordCount-@PageSize*@PageIndex)+

' * from WapIndex where mediaType = '+ str(@type)+' order by id asc ) TmepTable order by addtime desc'

else

set @sqlstr = ' select top ' + str(@PageSize) + ' * from (select top '+ str(@RecordCount-@PageSize*@PageIndex) +

'* from WapIndex where Mediatype = '+ str(@type) + ' order by ID asc) TempTable order by addtime desc'

exec(@sqlstr)

GO