一个比较实用的大数据量分页存储过程

create proc sp_PublicTurnPageWebSite(
@TBName nvarchar(100)='',--表名,如 pinyin
@PageSizeint=10,--每页的记录数,默认为 10
@CurPageint=1,--表示当前页 1
@KeyFieldnvarchar(100)='ID',--关键字段名，默认为 ID,该字段要求是表中的索引 或 无重复和不为空的字段
@KeyAscDescnvarchar(4)='ASC',--关键字的升、降序，默认为升序 ASC , 降序为 DESC
@Fieldsnvarchar(500)='*',--所选择的列名，默认为全选
@Conditionnvarchar(200)='',--where 条件,默认为空
@Ordernvarchar(200)=''--排序条件,默认为空
) with encryption as
if @TBName = ''
begin
raiserror('请指定表名！',11,1)
return
end
if @PageSize <=0 or @CurPage <0
begin
raiserror('当前页数和每页的记录数都必须大于零！',11,1)
return
end
if @KeyAscDesc = 'DESC'
set @KeyAscDesc = '<'
else
set @KeyAscDesc = '>'
if @Condition <> ''
set @Condition = ' where ' + @Condition
declare @SQL nvarchar(2000)

set @SQL = ''
if @CurPage = 1
set @SQL = @SQL + 'SELECT Top ' + cast(@PageSize as nvarchar(20)) + ' ' + @Fields + ' FROM ' + @TBName + @Condition + ' ' + @Order
else
begin
declare @iTopNum int
set @iTopNum = @PageSize * (@CurPage - 1)
set @SQL = @SQL + 'declare @sLastValue nvarchar(100)' + char(13)
set @SQL = @SQL + 'SELECT Top ' + cast(@iTopNum as nvarchar(20)) + ' @sLastValue=' + @KeyField + ' FROM ' + @TBName + @Condition + ' ' + @Order + char(13)

declare @Condition2 nvarchar(200)
if @Condition = ''
set @Condition2 = ' where ' + @KeyField + @KeyAscDesc + '@sLastValue '
else
set @Condition2 = ' and ' + @KeyField + @KeyAscDesc + '@sLastValue '
set @SQL = @SQL + 'SELECT Top ' + cast(@PageSize as nvarchar(20)) + ' ' + @Fields + ' FROM ' + @TBName + @Condition + @Condition2 + @Order
end
EXECUTE sp_executesql @SQL