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[转载]MSSQL分页：一个高效的二分法TOP MAX/TOP MIN分页存储过程 – 熊哥 www.relaxlife.net – 博客园.
CREATE PROCEDURE [dbo].[getPagerTopMAX] (
@tblName nvarchar(2000), —–要显示的表或多个表的连接,如：”myTable”
@ID nvarchar(150), —–主表的主键，如：”id”
@page int = 1, —–要显示那一页的记录
@pageSize int = 10, —–每页显示的记录个数
@fldName nvarchar(500) = ‘*‘, —–要显示的字段列表,如：”id, cdsinger, cdsingertype, area, cdsingerreadme”
@fldSort nvarchar(200) = @ID, —–排序字段列表或条件
@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,如：”and a=1 and b=2″
@Dist bit = 0, —–是否添加查询字段的 DISTINCT 默认0不添加/1添加
@Counts int = 1 output, —–查询到的记录数
@pageCount int = 1 output —–查询结果分页后的总页数
) AS begin
SET NOCOUNT ON
Declare @SQLTmp nvarchar(3000) —–存放动态生成的SQL语句
Declare @strTmp nvarchar(3000) —–存放取得查询结果总数的查询语句
Declare @strID nvarchar(3000) —–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A
Declare @strFSortType nvarchar(10) —–数据排序规则B
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 @strFSortType=‘ ASC ‘
set @strSortType=‘ DESC ‘
end
else
begin
set @strFSortType=‘ DESC ‘
set @strSortType=‘ ASC ‘
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 @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
if @page=1
set @strTmp=@SqlSelect+‘ top ‘+ CAST(@pageSize as VARCHAR(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
else
begin
set @strTmp=@SqlSelect+‘ top ‘+ CAST(@pageSize as VARCHAR(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ where ‘+@ID+‘ <(select min(‘+ @ID +‘) from (‘+ @SqlSelect+‘ top ‘+ CAST(@pageSize*(@page–1) as Varchar(20)) +‘ ‘+ @ID +‘ from ‘+@tblName
+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType+‘) AS TBMinID)‘
+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
end
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(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ order by ‘+ @fldSort +‘ ‘+ @strSortType+‘) AS TempTB‘+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
else
set @strTmp=@SqlSelect+‘ * from (‘+@SqlSelect+‘ top ‘+ CAST(@pageSize as VARCHAR(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ where ‘+@ID+‘ >(select max(‘+ @ID +‘) from(‘+ @SqlSelect+‘ top ‘+ CAST(@pageSize*(@page–2)+@lastcount as Varchar(20)) +‘ ‘+ @ID +‘ from ‘+@tblName
+‘ order by ‘+ @fldSort +‘ ‘+ @strSortType+‘) AS TBMaxID)‘
+‘ order by ‘+ @fldSort +‘ ‘+ @strSortType+‘) AS TempTB‘+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
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
if @page=1
set @strTmp=@SqlSelect+‘ top ‘+ CAST(@pageSize as VARCHAR(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ where 1=1 ‘ + @strCondition + ‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
else
begin
set @strTmp=@SqlSelect+‘ top ‘+ CAST(@pageSize as VARCHAR(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ where ‘+@ID+‘ <(select min(‘+ @ID +‘) from (‘+ @SqlSelect+‘ top ‘+ CAST(@pageSize*(@page–1) as Varchar(20)) +‘ ‘+ @ID +‘ from ‘+@tblName
+‘ where (1=1) ‘ + @strCondition +‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType+‘) AS TBMinID)‘
+‘ ‘+ @strCondition +‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
end
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(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ where (1=1) ‘+ @strCondition +‘ order by ‘+ @fldSort +‘ ‘+ @strSortType+‘) AS TempTB‘+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
else
set @strTmp=@SqlSelect+‘ * from (‘+@SqlSelect+‘ top ‘+ CAST(@pageSize as VARCHAR(20))+‘ ‘+ @fldName+‘ from ‘+@tblName
+‘ where ‘+@ID+‘ >(select max(‘+ @ID +‘) from(‘+ @SqlSelect+‘ top ‘+ CAST(@pageSize*(@page–2)+@lastcount as Varchar(20)) +‘ ‘+ @ID +‘ from ‘+@tblName
+‘ where (1=1) ‘+ @strCondition +‘ order by ‘+ @fldSort +‘ ‘+ @strSortType+‘) AS TBMaxID)‘
+‘ ‘+ @strCondition+‘ order by ‘+ @fldSort +‘ ‘+ @strSortType+‘) AS TempTB‘+‘ order by ‘+ @fldSort +‘ ‘+ @strFSortType
end
end
——-返回查询结果—–
—print @strTmp
exec (@strTmp)
SET NOCOUNT OFF
end
