存储过程-统计10年热点关键词

记录一下吧

USE [NPU_Group]
GO
/****** Object:  StoredProcedure [dbo].[Proc_HotAndFutrueKeywords]    Script Date: 02/05/2013 10:02:26 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- ================================================
-- Proc Function : 研究热点和趋势统计存储过程
-- Create Date   : 2013-02-01
-- Update Date   : 2012-02-01
-- Create User   : IsaacZhang
-- Update User   : IsaacZhang
-- Description   : 研究热点和趋势统计数据
-- Parameter     :
-- ================================================
ALTER PROCEDURE [dbo].[Proc_HotAndFutrueKeywords]
    @year INT ,--年度
    @groupIntId INT,  --群组ID
    @TopNum INT --取多少条热点数据
AS


--创建结果临时表
CREATE TABLE #tbResult(
        KeywordIdInt INT , 
        KeywordId UNIQUEIDENTIFIER ,
        KeyWordName VARCHAR(200) ,
        ForeignName VARCHAR(200) ,
        IsTopic BIT ,
        HotYear INT,
        TotalCount decimal(18, 2),
        GroupIntId INT,
        AmplificationNum decimal(18, 2),
        Amplification decimal(18, 2),
        AmpliFactor    decimal(18, 2)
)
--定义要输出的所有年份
DECLARE @YearCount INT
SET @YearCount = 10;
--声明变量
DECLARE @KeywordIdInt INT
DECLARE @KeywordId UNIQUEIDENTIFIER
DECLARE @KeyWordName VARCHAR(200),@ForeignName VARCHAR(200)
DECLARE @IsTopic BIT
DECLARE @TotalCount decimal(18, 2)
DECLARE @Amplification decimal(18, 2),@lastYearCount decimal(18, 2),@AmplificationNum decimal(18, 2)
,@AmpliFactor    decimal(18, 2)

DECLARE @CurrentYear INT
--如果群组ID不为0，则取全部关键词文献信息
IF @groupIntId!=0
BEGIN

BEGIN TRANSACTION Trans_HotAndFutrueKeywords --创建事务
--删除表中原数据
DELETE FROM dbo.Pt_FutureAmplification;

    --初始化当前年
    SET @CurrentYear = @year;
    WHILE(@CurrentYear>=@year-@YearCount)
    BEGIN
        --声明游标
        DECLARE hotKeywordsIndex CURSOR 
        FOR SELECT * FROM NPU_Core.dbo.Keyword
        OPEN hotKeywordsIndex
        FETCH NEXT FROM hotKeywordsIndex INTO @KeywordIdInt,@KeywordId,@KeyWordName
                ,@ForeignName,@IsTopic
        WHILE @@FETCH_STATUS = 0
        BEGIN
            --每次重新赋值
            SET @TotalCount = 0;
            SET @lastYearCount = 0;
            PRINT '=============='+CAST(@CurrentYear AS VARCHAR(20))+'==============='
            SELECT @TotalCount = COUNT(0) FROM View_ShareBib2Keywords WHERE KeywordIdInt =@KeywordIdInt
            AND [Year] = @CurrentYear
            
            SELECT @lastYearCount = COUNT(0) FROM View_ShareBib2Keywords WHERE KeywordIdInt =@KeywordIdInt
            AND [Year] = (@CurrentYear-1)
            --PRINT CAST(@TotalCount AS VARCHAR(20))+'<-current-------last->'+CAST(@lastYearCount AS VARCHAR(20))
            --增长数量
            SET @AmplificationNum = @TotalCount-@lastYearCount;
            --增长幅度
            IF @lastYearCount!=0 AND @lastYearCount!=1
            BEGIN
                SET @Amplification = (@TotalCount-@lastYearCount)/@lastYearCount
                --增长因素
                SET @AmpliFactor = @AmplificationNum*@Amplification;
                --如果增幅为负增长
                IF(@TotalCount<@lastYearCount)
                BEGIN
                    SET @Amplification = -round((@lastYearCount-@TotalCount)/@lastYearCount,3);
                    SET @AmpliFactor = -@AmpliFactor;
                    --PRINT '|||'+CAST(@Amplification AS VARCHAR(20))
                END
            END
            ELSE
            BEGIN
                SET @Amplification = (@TotalCount-@lastYearCount)/1.00;
                SET @AmpliFactor = 0;
            END
            IF @TotalCount IS NULL
                SET @TotalCount = 0;
        
            INSERT INTO Pt_FutureAmplification VALUES(
                @KeywordIdInt,
                @KeywordId,
                @KeyWordName,
                @ForeignName,
                @IsTopic,
                @CurrentYear,
                @TotalCount,
                @groupIntId,
                @AmplificationNum,
                @Amplification,
                @AmpliFactor
            );
        --执行下一次游标操作
        FETCH NEXT FROM  hotKeywordsIndex INTO @KeywordIdInt,@KeywordId,@KeyWordName
            ,@ForeignName,@IsTopic
        END
        --关闭游标
        CLOSE hotKeywordsIndex
        --释放资源
        DEALLOCATE hotKeywordsIndex
        SET @CurrentYear = @CurrentYear-1;
    END
    
        SELECT top ((@TopNum)) * FROM #tbResult
        WHERE HotYear = ((@year-2))
         ORDER BY TotalCount DESC,HotYear DESC
    IF @@ERROR=0
        COMMIT TRANSACTION Pt_FutureAmplification -- 提交事务处理
    ELSE
        ROLLBACK TRANSACTION Pt_FutureAmplification   --事务回滚
END