SQLServer 高效 分页存储过程

/**********************************************************************

参数：@PrimaryKey 主键，@OrderBy 排序字段,@SqlStr sql语句,@PageSize 每页显示的记录,@PageIndex 当前页(从0开始)

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ALTER procedure [dbo].[PageQuery]

@PrimaryKey varchar(100),--主键

@OrderBy varchar(100),--排序字段

@SqlStr varchar(8000),--sql语句

@PageSize int,--每页显示的记录

@PageIndex int--当前页(从1开始)

--@RecordCount int output --返回的总记录数

as

declare @ExecSql varchar(8000)--要执行的Sql组合

if @OrderBy=''

set @OrderBy='order by '+@PrimaryKey+' asc'

else if (len(@OrderBy)<8 or upper(substring(@OrderBy,1,8))<>'ORDER BY')

set @OrderBy='order by '+@OrderBy

if @PageSize=-1--用于ajax的第一次查询

set @PageSize=0

set @PageIndex=@PageIndex-1

print('-----'+CAST(@PageIndex as varchar(10)) )

begin

declare @recordCount int,@pageCount int

declare @s nvarchar(4000)

set @s = N'select @recordCount = count('+@PrimaryKey+') from ('+@SqlStr+') TN'

exec sp_executeSql @s,N'@recordCount int output',@recordCount output

if(@pageSize>0)

set @pageCount = (@recordCount - 1 + @PageSize) / @PageSize;--总页数

else

set @pageCount = 0;--总页数

	if @PageIndex<=0--如果是第一页就执行这个
		begin
			set @ExecSql='select top '+cast(@PageSize as varchar(100))+' * from ('+@SqlStr+') T '+@OrderBy
		end
	else
		begin
			if charindex('2000 - 8.00.',@@version)>0
				begin
					set @ExecSql=
					'select top '+cast(@PageSize as varchar(100))+' *
					from ('+@SqlStr+') as T where T.'+@PrimaryKey+' not in
					(select top '+cast((@PageSize*@PageIndex) as varchar(100))+' '+@PrimaryKey+'
						from ('+@SqlStr+') T2 '+@OrderBy+') '+ @OrderBy
				end
			else
				begin
					set @ExecSql=
					'select * from
					(
						select * from
						(SELECT *, #RowNum#=ROW_NUMBER() OVER('+@OrderBy+') FROM ('+@SqlStr+') T1) T2 where T2.#RowNum#>='+cast(@PageSize*@PageIndex+1 as varchar(10))+' and T2.#RowNum#<='+cast(@PageSize*(@PageIndex+1) as varchar(10))+'
					) T3
					'
				end
		end
		exec (@ExecSql+' select '+@recordCount+' as RecordCount,'+@pageCount+' as PageCount ')

end