--/*-----存儲過程 分頁處理 SW 2005-03-28創建 -------*/--/*----- 對數據進行了2分處理使查詢前半部分數據與查詢後半部分數據性能相同 -------*/--/*-----存儲過程 分頁處理 2005-04-21修改 添加Distinct查詢功能-------*/--/*-----存儲過程 分頁處理 2005-05-18修改 多字段排序規則問題-------*/--/*-----存儲過程 分頁處理 2005-06-15修改 多字段排序修改-------*/--/*-----存儲過程 分頁處理 2005-12-13修改 修改數據分頁方式爲top max模式 性能有極大提高-------*/--/*-----缺點：相對之前的not in版本主鍵只能是整型字段,如主鍵爲GUID類型請使用not in 模式的版本-------*/CREATE PROCEDURE dbo.proc_ListPageInt(@tblName nvarchar(200), ----要顯示的表或多個表的連接@fldName nvarchar(500) = '*', ----要顯示的字段列表@pageSize int = 10, ----每頁顯示的記錄個數@page int = 1, ----要顯示那一頁的記錄@pageCount int = 1 output, ----查詢結果分頁後的總頁數@Counts int = 1 output, ----查詢到的記錄數@fldSort nvarchar(200) = null, ----排序字段列表或條件@Sort bit = 0, ----排序方法，0爲升序，1爲降序(如果是多字段排列Sort指代最後一個排序字段的排列順序(最後一個排序字段不加排序標記)--程序傳參如：' SortA Asc,SortB Desc,SortC ')@strCondition nvarchar(1000) = null, ----查詢條件,不需where@ID nvarchar(150), ----主表的主鍵@Dist bit = 0 ----是否添加查詢字段的 DISTINCT 默認0不添加/1添加)ASSET NOCOUNT ONDeclare @sqlTmp nvarchar(1000) ----存放動態生成的SQL語句Declare @strTmp nvarchar(1000) ----存放取得查詢結果總數的查詢語句Declare @strID nvarchar(1000) ----存放取得查詢開頭或結尾ID的查詢語句Declare @strSortType nvarchar(10) ----數據排序規則ADeclare @strFSortType nvarchar(10) ----數據排序規則BDeclare @SqlSelect nvarchar(50) ----對含有DISTINCT的查詢進行SQL構造Declare @SqlCounts nvarchar(50) ----對含有DISTINCT的總數查詢進行SQL構造if @Dist = 0begin set @SqlSelect = 'select ' set @SqlCounts = 'Count(*)'endelsebegin set @SqlSelect = 'select distinct ' set @SqlCounts = 'Count(DISTINCT '+@ID+')'endif @Sort=0begin set @strFSortType=' ASC ' set @strSortType=' DESC 'endelsebegin set @strFSortType=' DESC ' set @strSortType=' ASC 'end--------生成查詢語句----------此處@strTmp爲取得查詢結果數量的語句if @strCondition is null or @strCondition='' --沒有設置顯示條件begin set @sqlTmp = @fldName + ' From ' + @tblName set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName set @strID = ' From ' + @tblNameendelsebegin 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) ' + @strConditionend----取得查詢結果總數量-----exec sp_executesql @strTmp,N'@Counts int out ',@Counts outdeclare @tmpCounts intif @Counts = 0 set @tmpCounts = 1else set @tmpCounts = @Counts --取得分頁總數 set @pageCount=(@tmpCounts+@pageSize-1)/@pageSize
/**當前頁大於總頁數 取最後一頁**/
if @page>@pageCount set @page=@pageCount --/*-----數據分頁2分處理-------*/ declare @pageIndex int --總數/頁大小 declare @lastcount int --總數%頁大小 set @pageIndex = @tmpCounts/@pageSize set @lastcount = @tmpCounts%@pageSize if @lastcount > 0 set @pageIndex = @pageIndex + 1 else set @lastcount = @pagesize --//***顯示分頁 if @strCondition is null or @strCondition='' --沒有設置顯示條件 begin if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分數據處理 begin if @page=1 set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName +' order by '+ @fldSort +' '+ @strFSortType else begin set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @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 --後半部分數據處理 if @page <= 1 --最後一頁數據顯示 set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName +' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType else set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @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 --有查詢條件 begin if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分數據處理 begin if @page=1 set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName +' where 1=1 ' + @strCondition + ' order by '+ @fldSort +' '+ @strFSortType else begin set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @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 --後半部分數據處理 if @page <= 1 --最後一頁數據顯示 set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @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(4))+' '+ @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------返回查詢結果-----exec sp_executesql @strTmp--print @strTmpSET NOCOUNT OFFGO調用方法列子：
/// <summary>
/// 通用分頁數據讀取函數 /// 注意：在函數調用外部打開和關閉連接，以及關閉數據讀取器 /// </summary> /// <param name="comm">SqlCommand對象</param> /// <param name="_tblName">查詢的表/表聯合</param> /// <param name="_fldName">要查詢的字段名</param> /// <param name="_pageSize">每頁數據大小</param> /// <param name="_page">當前第幾頁</param> /// <param name="_fldSort">排序字段</param> /// <param name="_Sort">排序順序0降序1升序</param> /// <param name="_strCondition">過濾條件</param> /// <param name="_ID">主表主鍵</param> 
/// <param name="_dr">返回的SqlDataReader ref</param> public static void CutPageData(SqlConnection conn, ref SqlCommand comm, string _tblName, string _fldName, int _pageSize, int _page, string _fldSort, int _Sort, string _strCondition, string _ID, ref SqlDataReader _dr) {
//注意：在函數調用外部打開和關閉連接，以及關閉數據讀取器 //comm = new SqlCommand("proc_ListPage",conn); //comm.CommandType = CommandType.StoredProcedure; comm.Parameters.Add("@tblName", SqlDbType.NVarChar, 200); comm.Parameters["@tblName"].Value = _tblName; comm.Parameters.Add("@fldName", SqlDbType.NVarChar, 500); comm.Parameters["@fldName"].Value = _fldName; comm.Parameters.Add("@pageSize", SqlDbType.Int); comm.Parameters["@pageSize"].Value = _pageSize; comm.Parameters.Add("@page", SqlDbType.Int); comm.Parameters["@page"].Value = _page; comm.Parameters.Add("@fldSort", SqlDbType.NVarChar, 200); comm.Parameters["@fldSort"].Value = _fldSort; comm.Parameters.Add("@Sort", SqlDbType.Bit); comm.Parameters["@Sort"].Value = _Sort; comm.Parameters.Add("@strCondition", SqlDbType.NVarChar, 1000); comm.Parameters["@strCondition"].Value = _strCondition; comm.Parameters.Add("@ID", SqlDbType.NVarChar, 150); comm.Parameters["@ID"].Value = _ID; comm.Parameters.Add("@Counts", SqlDbType.Int, 0); comm.Parameters["@Counts"].Direction = ParameterDirection.Output; comm.Parameters.Add("@pageCount", SqlDbType.Int, 0); comm.Parameters["@pageCount"].Direction = ParameterDirection.Output; _dr = comm.ExecuteReader(); }CutPageData(conn, ref comm, "VOX_CDSinger", "id, cdsinger, cdsingertype, area, cdsingerreadme", 15, page, "id", 1, strFilter, "id", ref dr);
對應說明：
CutPageData(數據連接對象, ref Sqlcommand對象, "需要表或視圖名稱", "要查詢的字段", 每頁讀取數據條數, 當前頁, "排序字段可多字段如(addtime desc, visitcounts注意這裏最後一個字段不加desc或asc 最後一個字段對應於後面的排序規則)", 排序方式(1 desc 0 asc), where條件（這裏不再添加where條件添加如：' and visitcounts>100'）, 表主鍵, ref 返回的SqlDataReader對象);