/*

过程功能:分页
创建时间:12-06-09
修改时间:130115,支持多个字段排序分页
*/

--CREATE PROCEDURE up_pagination

ALTER PROCEDURE [dbo].[up_pagination]

(

@tblName nvarchar(200), ----要显示的表或多个表的连接

@fldName nvarchar(500) = '*', ----要显示的字段列表

@pageSize int = 1, ----每页显示的记录个数

@page int = 10, ----要显示那一页的记录

@fldSort nvarchar(200) = null, ----排序字段列表

@Sort bit = 1, ----排序方法,0为升序,1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)--程序传参如:' SortA Asc,SortB Desc,SortC ')

@strCondition nvarchar(1000) = null, ----查询条件,不需where

@ID nvarchar(150), ----主表的主键

@Dist bit = 0, ----是否添加查询字段的 DISTINCT 默认0不添加/1添加

@pageCount int = 1 output, ----查询结果分页后的总页数

@Counts
int = 1 output ----查询到的记录数

)

AS

SET NOCOUNT ON

Declare @sqlTmp nvarchar(4000) ----存放动态生成的SQL语句

Declare @strTmp nvarchar(4000) ----存放取得查询结果总数的查询语句

Declare @strID nvarchar(1000) ----存放取得查询开头或结尾ID的查询语句



Declare @strSortType nvarchar(10) ----数据排序规则

Declare @fldSortnormal nvarchar(200) ----排序字段正常

Declare @fldSortRevers nvarchar(200) ----排序字段翻转后



Declare @SqlSelect nvarchar(50) ----对含有DISTINCT的查询进行SQL构造

Declare @SqlCounts nvarchar(50) ----对含有DISTINCT的总数查询进行SQL构造





if @Dist = 0

begin

set @SqlSelect = 'select '

set @SqlCounts = 'Count(*)'

end

else

begin

set @SqlSelect = 'select distinct '

set @SqlCounts = 'Count(DISTINCT '+@ID+')'

end





if @Sort=0

begin

set @strSortType=' ASC '

end

else

begin

set @strSortType=' DESC '

end



if @fldSort != ''

begin

set @fldSortnormal = UPPER(@fldSort + @strSortType)

set @fldSortRevers = REPLACE(@fldSortnormal,' ASC',' ####')

set @fldSortRevers = REPLACE(@fldSortRevers,' DESC',' ASC')

set @fldSortRevers = REPLACE(@fldSortRevers,'####','DESC')

end





--------生成查询语句--------

--此处@strTmp为取得查询结果数量的语句

if @strCondition is null or @strCondition='' --没有设置显示条件

begin

set @sqlTmp = @fldName + ' From ' + @tblName

set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName

set @strID = ' From ' + @tblName

end

else

begin

set @strCondition = ' and '+@strCondition;

set @sqlTmp = + @fldName + 'From ' + @tblName + ' where (1>0) ' + @strCondition

set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName + ' where (1>0) ' + @strCondition

set @strID = ' From ' + @tblName + ' where (1>0) ' + @strCondition

end



----取得查询结果总数量-----

exec sp_executesql @strTmp,N'@Counts int out ',@Counts out

declare @tmpCounts int

if @Counts = 0

set @tmpCounts = 1

else

set @tmpCounts = @Counts



--取得分页总数

set @pageCount=(@tmpCounts+@pageSize-1)/@pageSize



/**//**当前页大于总页数 取最后一页**/

if @page>@pageCount

set @page=@pageCount



--/*-----数据分页2分处理-------*/

declare @pageIndex int --总数/页大小

declare @lastcount int --总数%页大小



set @pageIndex = @tmpCounts/@pageSize

set @lastcount = @tmpCounts%@pageSize

if @lastcount > 0

set @pageIndex = @pageIndex + 1

else

set @lastcount = @pagesize



--//***显示分页

if @strCondition is null or @strCondition='' --没有设置显示条件

begin

if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理

begin

set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName

+' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName

+' order by '+ @fldSortnormal +')'

+' order by '+ @fldSortnormal

end

else

begin

set @page = @pageIndex-@page+1 --后半部分数据处理

if @page <= 1 --最后一页数据显示

set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName

+' order by '+ @fldSortRevers +') AS TempTB'

+' order by '+ @fldSortnormal

else

set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName

+' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName

+' order by '+ @fldSortRevers +')'

+' order by '+ @fldSortRevers +') AS TempTB'

+' order by '+ @fldSortnormal

end

end



else --有查询条件

begin

if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理

begin

set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName +' from '+@tblName

+' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName

+' Where (1>0) ' + @strCondition

+ ' order by '+ @fldSortnormal +')'

+' ' + @strCondition

+ ' order by '+ @fldSortnormal

end

else

begin

set @page = @pageIndex-@page+1 --后半部分数据处理

if @page <= 1 --最后一页数据显示

set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName

+' where (1>0) '+ @strCondition

+' order by '+ @fldSortRevers +') AS TempTB'

+' order by '+ @fldSortnormal

else

set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName

+' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName

+' where (1>0) '+ @strCondition

+' order by '+ @fldSortRevers +')'

+ @strCondition

+' order by '+ @fldSortRevers +') AS TempTB'

+' order by '+ @fldSortnormal

end

end



------返回查询结果-----

print @strTmp

exec sp_executesql @strTmp

SET NOCOUNT OFF















GO