• 毫秒级百万数据分页存储过程


    然后创建分页存储过程;这个是基于SQL 2005 的ROW_NUMBER的, SQL 2000 不适用; SQL 2008 我没有安装,所以也没有测试过!估计应该可以运行.

     2种算法可以选择 1. 使用  BETWEEN   ;  2.  TOP  ; 代码中已经注释了.

    我测试了一下2种方法基本没有什么区别;代码如下:

     

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    USE [DATA_TEMP]
    GO
    /****** 对象:  StoredProcedure [dbo].[im531_Page]    脚本日期: 11/26/2010 10:52:35 ******/
    SET ANSI_NULLS ON
    GO
    SET QUOTED_IDENTIFIER ON
    GO
     
    -- =============================================
    -- Author:      im531
    -- Create date: 2010-10-25
    -- Description: SQL 2005 ROW_NUMBER 分页
    -- Modify Date: 2010-10-26
    -- =============================================
     
    CREATE PROCEDURE [dbo].[im531_Page]
        @TabeNameAS NVARCHAR(50),
        @FieldsAS NVARCHAR(1024),
        @SearchWhereAS NVARCHAR(1024),
        @OrderFieldsAS NVARCHAR(1024),
        @pageNumberAS INT,
        @pageAS INT
    AS
    BEGIN
        SET NOCOUNTON;
        DECLARE @sqlTypeAS TINYINT
        SET @sqlType = 0  -- 0 BETWEEN   1 TOP
        DECLARE @sqlAS NVARCHAR(MAX)
        IF @SearchWhere <> '' SET @SearchWhere = ' WHERE ' + @SearchWhere
        IF @page < 2 SET @page = 1
        IF @page = 1
            BEGIN
                SET @sql = 'SELECT TOP ' +CONVERT(NVARCHAR(20),@pageNumber) + ' ' + @Fields
                    +'FROM [' + @TabeName + '][a] WITH(NOLOCK) ' + @SearchWhere + ' ORDER BY ' + @OrderFields
            END
        ELSE
            BEGIN
                --临时表
                SET @sql = ';WITH [Page_____Table] AS('
                    +'SELECT ROW_NUMBER() OVER(ORDER BY ' + @OrderFields + ') AS [RowNow],' + @Fields
                    +'FROM ['+ @TabeName +' ][a] WITH(NOLOCK) ' + @SearchWhere
                    +')'
                --查找当前页面记录
                IF @sqlType = 0
                    BEGIN
                    -- A USE BETWEEN
                        SET @sql = @sql + 'SELECT *'
                            +'FROM [Page_____Table] WITH(NOLOCK)'
                            +'WHERE [RowNow] BETWEEN ' +CONVERT(NVARCHAR(20),(@page - 1) * @pageNumber + 1) + ' AND ' +CONVERT(NVARCHAR(20),@page * @pageNumber)
                            +'ORDER BY [RowNow]'
                    END
                ELSE
                    BEGIN
                    -- B USE TOP
                        SET @sql = @sql + 'SELECT TOP ' +CONVERT(NVARCHAR(20),@pageNumber) + ' *'
                            +'FROM [Page_____Table] WITH(NOLOCK)'
                            +'WHERE [RowNow] > ' +CONVERT(NVARCHAR(20),(@page - 1) * @pageNumber)
                            +'ORDER BY [RowNow]'
                    END
            END
        EXEC(@sql)
    END

     

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  • 原文地址:https://www.cnblogs.com/aiwz/p/6153899.html
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