SQL分页存储过程及调用方法

存储过程：

USE [HHWeb]

GO

/****** Object:  StoredProcedure [dbo].[P_Pageing]    Script Date: 05/08/2013 14:09:50 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO



ALTER PROC [dbo].[P_Pageing]



@tbname     nvarchar(50),           --要分页显示的表的名称



@FieldKey   nvarchar(100),            --用于定位记录的主键(唯一键)字段,可以是逗号分隔的多个字段



@NowPage int=1,                        --要显示的页码



@PageSize   int=20,                    --每页显示的记录条数



@FieldShow nvarchar(500)='',        --以逗号分隔的要显示的字段列表,如果不指定,则显示所有字段



@FieldOrder nvarchar(500)='',        --以逗号分隔的排序字段列表,可以指定在字段后面指定DESC/ASC用于指定排序顺序



@Where    nvarchar(500)='',            --查询条件



@Totalcount int OUTPUT                --总条数



AS



SET NOCount ON



--检查对象是否有效



IF OBJECT_ID(@tbname) IS NULL



BEGIN



    RAISERROR(N'对象"%s"不存在',1,16,@tbname)



    RETURN



END



IF OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTable')=0



    AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsView')=0



    AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTableFunction')=0



BEGIN



    RAISERROR(N'"%s"不是表、视图或者表值函数',1,16,@tbname)



    RETURN



END



 



--分页字段检查



IF ISNULL(@FieldKey,N'')=''



BEGIN



    RAISERROR(N'分页处理需要主键（或者惟一键）',1,16)



    RETURN



END



 



--其他参数检查及规范



IF ISNULL(@NowPage,0)<1 SET @NowPage=1



IF ISNULL(@PageSize,0)<1 SET @PageSize=20



IF ISNULL(@FieldShow,N'')=N'' SET @FieldShow=N'*'



IF ISNULL(@FieldOrder,N'')=N''



    SET @FieldOrder=N''



ELSE



    SET @FieldOrder=N'ORDER BY '+LTRIM(@FieldOrder)





--计算分页显示的TOPN值



DECLARE @TopN varchar(20)

SELECT @TopN=(@NowPage-1)*@PageSize



--判断查询条件是否存在

DECLARE @WhereOne nvarchar(1000)

IF ISNULL(@Where,N'')=N''

BEGIN

    SET @WhereOne=N' '

    SET @Where=N'WHERE '+@FieldKey+N' not in(select top '+@TopN+N' '+@FieldKey+N' from '+@tbname+N' '+@FieldOrder+N')'

END

ELSE

BEGIN

    SET @WhereOne=N'WHERE '+@Where+N' '

    SET @Where=N'WHERE '+@Where+N' and '+@FieldKey+N' not in(select top '+@TopN+N' '+@FieldKey+N' from '+@tbname+N' WHERE '+@Where+N' '+@FieldOrder+N')'

END



IF @Totalcount IS NULL



BEGIN



    DECLARE @sql nvarchar(4000)



    SET @sql=N'SELECT @Totalcount=Count(*)'



        +N' FROM '+@tbname



        +N' '+@WhereOne



    EXEC sp_executesql @sql,N'@Totalcount int OUTPUT',@Totalcount OUTPUT

    

END





--执行查询

EXEC(N'SELECT TOP '+@PageSize+' '+@FieldShow+' FROM '+@tbname+' with(nolock) '+@Where+' '+@FieldOrder+'')



--DECLARE @s int

--exec P_Pageing 'DownloadCodes','ID',4,2,'','AddTime desc','DowncodeNumber=1',@s OUTPUT

--select @s 

在cs页面调用的方式,查询时会有条件进行查询，先把查询条件拼接

 #region //搜索查询

        public void initSearch()

        {

            StringBuilder Wherestr = new StringBuilder();

            SearchTitle = Request.Form["SearchTitle"].ToString();

            SearchPublishTimeS = Request.Form["SearchPublishTimeS"].ToString();

            SearchPublishTimeE = Request.Form["SearchPublishTimeE"].ToString();

            SearchNewClassID= Request.Form["SearchNewClassInfo"].ToString();

            SearchNewSource = Request.Form["SearchNewSource"].ToString();

            Wherestr.Append("1=1");

            if (!string.IsNullOrEmpty(SearchTitle))

                Wherestr.Append(" and Title like '%" + SearchTitle + "%'");

            if (!string.IsNullOrEmpty(SearchPublishTimeS))

                Wherestr.Append(" and PublishTime >= '" + SearchPublishTimeS + "'");

            if (!string.IsNullOrEmpty(SearchPublishTimeE))

                Wherestr.Append(" and PublishTime <='" + SearchPublishTimeE + "'");

            if (SearchNewClassID != "0")

                Wherestr.Append(" and NewClassID =" + SearchNewClassID + "");

            if (!string.IsNullOrEmpty(SearchNewSource))

                Wherestr.Append(" and NewSource like '%" + SearchNewSource + "%'");



            ViewState["NowPage"] = 1;

            ViewState["Where"] = Wherestr.ToString();

        }

        #endregion

调用分页存储过程

        public void BindPage(int NowPage, int PageSize)

        {

            SqlParameter[] parameters = {

                    new SqlParameter("@tbname", SqlDbType.NVarChar,50),

                    new SqlParameter("@FieldKey", SqlDbType.NVarChar,1000),

                    new SqlParameter("@NowPage", SqlDbType.Int,4),

                    new SqlParameter("@PageSize", SqlDbType.Int,4),

                    new SqlParameter("@FieldShow", SqlDbType.NVarChar,1000),

                    new SqlParameter("@FieldOrder", SqlDbType.NVarChar,1000),

                    new SqlParameter("@Where", SqlDbType.NVarChar,1000),

                    new SqlParameter("@Totalcount", SqlDbType.Int,4)};

            parameters[0].Value = "News";

            parameters[1].Value = "ID";

            parameters[2].Value = NowPage;

            parameters[3].Value = PageSize;

            parameters[4].Value = "";

            parameters[5].Value = "Sort desc,PublishTime desc";

            parameters[6].Value =ViewState["Where"].ToString();

            parameters[7].Direction = ParameterDirection.Output;

            Repeater1.DataSource = HHDBUtility.DbHelperSQL.RunProcedure("P_Pageing", parameters);

            Repeater1.DataBind();

            AspNetPager1.AlwaysShow = true;

            AspNetPager1.PageSize = PageSize;

            AspNetPager1.RecordCount =Convert.ToInt32(parameters[7].Value);

        }