完整SQL分页存储过程（支持多表联接）

最新推荐文章于 2017-10-16 18:01:59 发布

转载最新推荐文章于 2017-10-16 18:01:59 发布 · 67 阅读

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原文链接：http://www.cnblogs.com/tangself/archive/2010/03/31/1701162.html

本文介绍了一个完整的SQL分页存储过程，适用于单表或多表联接查询，支持参数化设置如每页记录数、页码、排序方式等，通过动态生成SQL语句实现实现了数据的高效分页检索。

/*********************************************************
* 作    用：数据分页(完整SQL分页存储过程（支持多表联接）)
* 作    者：齐李平
* 创建日期：2009-03-23
* 使用说明：
    1、单表调用方法：EXEC proc_DataPagination @tblName = 'ipa',@fldName = '*',@pageSize =50,@page = 6789,@fldSort = '',@Sort = 1,@strCondition = '',@ID = 'id',@Dist = 0,@pageCount = null,@Counts = NULL
    2、多表调用方法：EXEC proc_DataPagination @tblName = 'Info LEFT JOIN InfoType it ON it.typeid=Info.tid',@fldName = 'info.*,it.tname',@pageSize =50,@page = 1806,@fldSort = '',@Sort = 0,@strCondition = '',@ID = 'id',@Dist = 0,    @pageCount = null,@Counts = NULL
* 多表联合查询使用需注意：1、多表中的主键字段不能为相同的名称。2、多表中不能允许具有相同名称的字段，如果存在相同名称的字段你可以使用AS重命名
*********************************************************/
alter PROCEDURE [dbo].[proc_DataPagination]
(
@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 = 10,        ----每页显示的记录个数
@page        int = 1,        ----要显示那一页的记录
@fldSort    nvarchar(200) = null,    ----排序字段列表或条件
@Sort        bit = 0,        ----排序方法，1为升序，0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(1000)        ----存放动态生成的SQL语句
Declare @strTmp nvarchar(1000)        ----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(0)'
end
else
begin
     set @SqlSelect = 'select distinct '
     set @SqlCounts = 'Count(DISTINCT '+@ID+')'
end


if @Sort=0
begin
     set @strFSortType=' DESC '
     set @strSortType=' DESC '
end
else
begin
     set @strFSortType=' ASC '
     set @strSortType=' ASC '
end

if(@fldSort is not null and @fldSort<>'')
begin
    set @fldSort=','+@fldSort
end
else
begin
    set @fldSort=' '
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

--为配合显示
--set nocount off
--select @page curpage,@pageSize pagesize,@pageCount countpage,@tmpCounts [Rowcount]
--set nocount on

  --//***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(40))+' '+ @fldName+' from '+@tblName
                         +' order by '+ @ID+' '+ @strFSortType+@fldSort
                 else
                 begin
                     set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(40))+' '+ @fldName+' from '+@tblName
                         +' where '+@ID
                     if @Sort=0
                        set @strTmp = @strTmp + '>(select max('
                     else
                        set @strTmp = @strTmp + '<(select min('
                     set @strTmp = @strTmp + @ID +') from ('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName
                         +' order by '+ @ID+' '+ @strFSortType+@fldSort+') AS TBMinID)'
                         +' order by '+ @ID+' '+ @strFSortType+@fldSort
                 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(40))+' '+ @fldName+' from '+@tblName
                         +' order by '+ @ID +' '+ @strSortType+@fldSort+') AS TempTB'+' order by '+ @ID+' '+ @strFSortType+@fldSort
                 else
                     begin
                     set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(40))+' '+ @fldName+' from '+@tblName
                         +' where '+@ID
                         if @Sort=0
                            set @strTmp=@strTmp+' <(select min('
                         else
                            set @strTmp=@strTmp+' >(select max('
  set @strTmp=@strTmp+ @ID +') from('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName
                         +' order by '+ @ID +' '+ @strSortType+@fldSort+') AS TBMaxID)'
                         +' order by '+ @ID +' '+ @strSortType+@fldSort+') AS TempTB'+' order by '+ @ID+' '+ @strFSortType+@fldSort
                    end
             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(40))+' '+ @fldName+' from '+@tblName
                         +' where 1=1 ' + @strCondition + ' order by '+ @ID+' '+ @strFSortType+@fldSort
                 else
                 begin
                     set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(40))+' '+ @fldName+' from '+@tblName
                         +' where '+@ID
                     if @Sort=0
                        set @strTmp = @strTmp + '>(select max('
                     else
                        set @strTmp = @strTmp + '<(select min('

                  set @strTmp = @strTmp + @ID +') from ('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName
                         +' where (1=1) ' + @strCondition +' order by '+ @ID+' '+ @strFSortType+@fldSort+') AS TBMinID)'
                         +' '+ @strCondition +' order by '+ @ID+' '+ @strFSortType+@fldSort
                 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(40))+' '+ @fldName+' from '+@tblName
                         +' where (1=1) '+ @strCondition +' order by '+ @ID +' '+ @strSortType+@fldSort+') AS TempTB'+' order by '+ @ID+' '+ @strFSortType+@fldSort
             else
                   begin
                     set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(40))+' '+ @fldName+' from '+@tblName
                         +' where '+@ID
                     if @Sort=0
                        set @strTmp = @strTmp + '<(select min('
                     else
                        set @strTmp = @strTmp + '>(select max('
                set @strTmp = @strTmp + @ID +') from('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName
                         +' where (1=1) '+ @strCondition +' order by '+ @ID +' '+ @strSortType+@fldSort+') AS TBMaxID)'
                         +' '+ @strCondition+' order by '+ @ID +' '+ @strSortType+@fldSort+') AS TempTB'+' order by '+ @ID+' '+ @strFSortType+@fldSort
                  end
         end

     end

------返回查询结果-----
SET NOCOUNT off
exec sp_executesql @strTmp
print @strTmp

转载于:https://www.cnblogs.com/tangself/archive/2010/03/31/1701162.html