SQLSERVER Pager store procedure

SQL SERVER(2005)以上版本可用

 

代码
   
     

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [ dbo ] . [ Pagination ]
@Page int = 1 , -- 当前页码
@PageSize int = 10 , -- 每页记录条数(页面大小)
@Table nvarchar ( 500 ), -- 表名或视图名,甚至可以是嵌套SQL:(Select * From Tab Where ID>1000) Tab
@Field nvarchar ( 800 ) = ' * ' , -- 返回记录集字段名,","隔开,默认是"*"
@OrderBy nvarchar ( 100 ) = ' ID ASC ' , -- 排序规则
@Filter nvarchar ( 500 ), -- 过滤条件
@MaxPage smallint output, -- 执行结果 -1 error, 0 false, maxpage true
@TotalRow int output, -- 记录总数 /* 2007-07-12 22:11:00 update */
@Descript varchar ( 100 ) output -- 结果描述
AS
BEGIN

-- =============================================
--
Author: Jimmy.Yu
--
Create date: 2007-5-11
--
Description: SQL 2005 以上版本 通用分页存储过程
--
=============================================

Set ROWCOUNT @PageSize ;

Set @Descript = ' successful ' ;
-- -----------------参数检测----------------
IF LEN ( RTRIM ( LTRIM ( @Table ))) !> 0
Begin
Set @MaxPage = 0 ;
Set @Descript = ' table name is empty ' ;
Return ;
End

IF LEN ( RTRIM ( LTRIM ( @OrderBy ))) !> 0
Begin
Set @MaxPage = 0 ;
Set @Descript = ' order is empty ' ;
Return ;
End

IF ISNULL ( @PageSize , 0 ) <= 0
Begin
Set @MaxPage = 0 ;
Set @Descript = ' page size error ' ;
Return ;
End

IF ISNULL ( @Page , 0 ) <= 0
Begin
Set @MaxPage = 0 ;
Set @Descript = ' page error ' ;
Return ;
End
-- -----------------检测结束----------------

Begin Try
-- 整合SQL
Declare @SQL nvarchar ( 4000 ), @Portion nvarchar ( 4000 );

Set @Portion = ' ROW_NUMBER() OVER (ORDER BY ' + @OrderBy + ' ) AS ROWNUM FROM ' + @Table ;

Set @Portion = @Portion + ( CASE WHEN LEN ( @Filter ) >= 1 THEN ( ' Where ' + @Filter + ' ) AS tab ' ) ELSE ( ' ) AS tab ' ) END );

Set @SQL = ' Select TOP( ' + CAST ( @PageSize AS nvarchar ( 8 )) + ' ) ' + @Field + ' FROM (Select ' + @Field + ' , ' + @Portion ;

Set @SQL = @SQL + ' Where tab.ROWNUM > ' + CAST (( @Page - 1 ) * @PageSize AS nvarchar ( 8 ));

-- 执行SQL, 取当前页记录集
Execute ( @SQL );
-- ------------------------------------------------------------------

-- 整合SQL
Set @SQL = ' Set @Rows = (Select MAX(ROWNUM) FROM (Select ' + @Portion + ' ) ' ;

-- 执行SQL, 取最大页码
Execute sp_executesql @SQL , N ' @Rows int output ' , @TotalRow output;
Set @MaxPage = ( CASE WHEN ( @TotalRow % @PageSize ) <> 0 THEN ( @TotalRow / @PageSize + 1 ) ELSE ( @TotalRow / @PageSize ) END );
End Try
Begin Catch
-- 捕捉错误
Set @MaxPage = - 1 ;
Set @Descript = ' error line: ' + CAST (ERROR_LINE() AS varchar ( 8 )) + ' , error number: ' + CAST (ERROR_NUMBER() AS varchar ( 8 )) + ' , error message: ' + ERROR_MESSAGE();
Return ;
End Catch;

-- 执行成功
Return ;
END

相对应的页面逻辑中写的对应调用该存储过程的方法(C#)

 

protected static DataTable GetPagedData(string sourceTable, int pageIndex, int pageSize, string sort, string filter, string fieldList, out int totalRecords)

        {

            /*

            @Page int = 1,      -- 当前页码

            @PageSize int = 10,     -- 每页记录条数(页面大小)

            @Table nvarchar(500),    -- 表名或视图名,甚至可以是嵌套SQL:(Select * From Tab Where ID>1000) Tab

            @Field nvarchar(200) = '*',   -- 返回记录集字段名,","隔开,默认是"*"

            @OrderBy nvarchar(100) = 'ID ASC', -- 排序规则

            @Filter nvarchar(500),    -- 过滤条件

            @MaxPage smallint output,   -- 执行结果 -1 error, 0 false, maxpage true

            @TotalRow int output,    -- 记录总数  --2007-07-12 22:11:00 update 

            @Descript varchar(100) output  -- 结果描述

             */

            string spPage = "Pagination";



            int maxPage = 0;

            SqlParameter parMaxPage = new SqlParameter("@MaxPage", maxPage);

            parMaxPage.Direction = ParameterDirection.Output;





            SqlParameter parTotalRow = new SqlParameter("@TotalRow", 0);

            parTotalRow.Direction = ParameterDirection.Output;



            string descr = "";

            SqlParameter parDescr = new SqlParameter("@Descript", descr);

            parDescr.Direction = ParameterDirection.Output;



            SqlParameter[] paras = new SqlParameter[]

            {

                new SqlParameter("@Page",pageIndex),

                new SqlParameter("@PageSize",pageSize),

                new SqlParameter("@Table",sourceTable),

                new SqlParameter("@Field",fieldList),

                new SqlParameter("@OrderBy",sort),

                new SqlParameter("@Filter",filter),

                parMaxPage,

                parTotalRow,

                parDescr

            };







            DataSet ds = SqlHelper.ExecuteDataset(ConnectionString, CommandType.StoredProcedure, spPage, paras);

            totalRecords = Util.ConvertTo<int>(parTotalRow.Value, 0);

            if (ds.Tables.Count > 0)

                return ds.Tables[0];

            else

                return null;

        }

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