一个比较实用的大数据量分页存储过程

发布: 2007-7-02 11:08 | 作者: admin | 来源: | 查看: 16次 | 进入软件测试论坛讨论

create proc sp_PublicTurnPageWebSite(
@TBName nvarchar(100)=@#@#, --表名,如 pinyin
@PageSize int=10,   --每页的记录数,默认为 10
@CurPage int=1,   --表示当前页 1
@KeyField nvarchar(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
@KeyAscDesc nvarchar(4)=@#ASC@#, --关键字的升、降序，默认为升序 ASC , 降序为 DESC
@Fields  nvarchar(500)=@#*@#, --所选择的列名，默认为全选
@Condition nvarchar(200)=@#@#, --where 条件,默认为空
@Order  nvarchar(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