存储过程-统计10年热点关键词

记录一下吧

  1 USE [NPU_Group]

  2 GO

  3 /****** Object:  StoredProcedure [dbo].[Proc_HotAndFutrueKeywords]    Script Date: 02/05/2013 10:02:26 ******/

  4 SET ANSI_NULLS ON

  5 GO

  6 SET QUOTED_IDENTIFIER ON

  7 GO

  8 -- ================================================

  9 -- Proc Function : 研究热点和趋势统计存储过程

 10 -- Create Date   : 2013-02-01

 11 -- Update Date   : 2012-02-01

 12 -- Create User   : IsaacZhang

 13 -- Update User   : IsaacZhang

 14 -- Description   : 研究热点和趋势统计数据

 15 -- Parameter     :

 16 -- ================================================

 17 ALTER PROCEDURE [dbo].[Proc_HotAndFutrueKeywords]

 18     @year INT ,--年度

 19     @groupIntId INT,  --群组ID

 20     @TopNum INT --取多少条热点数据

 21 AS

 22 

 23 

 24 --创建结果临时表

 25 CREATE TABLE #tbResult(

 26         KeywordIdInt INT , 

 27         KeywordId UNIQUEIDENTIFIER ,

 28         KeyWordName VARCHAR(200) ,

 29         ForeignName VARCHAR(200) ,

 30         IsTopic BIT ,

 31         HotYear INT,

 32         TotalCount decimal(18, 2),

 33         GroupIntId INT,

 34         AmplificationNum decimal(18, 2),

 35         Amplification decimal(18, 2),

 36         AmpliFactor    decimal(18, 2)

 37 )

 38 --定义要输出的所有年份

 39 DECLARE @YearCount INT

 40 SET @YearCount = 10;

 41 --声明变量

 42 DECLARE @KeywordIdInt INT

 43 DECLARE @KeywordId UNIQUEIDENTIFIER

 44 DECLARE @KeyWordName VARCHAR(200),@ForeignName VARCHAR(200)

 45 DECLARE @IsTopic BIT

 46 DECLARE @TotalCount decimal(18, 2)

 47 DECLARE @Amplification decimal(18, 2),@lastYearCount decimal(18, 2),@AmplificationNum decimal(18, 2)

 48 ,@AmpliFactor    decimal(18, 2)

 49 

 50 DECLARE @CurrentYear INT

 51 --如果群组ID不为0，则取全部关键词文献信息

 52 IF @groupIntId!=0

 53 BEGIN

 54 

 55 BEGIN TRANSACTION Trans_HotAndFutrueKeywords --创建事务

 56 --删除表中原数据

 57 DELETE FROM dbo.Pt_FutureAmplification;

 58 

 59     --初始化当前年

 60     SET @CurrentYear = @year;

 61     WHILE(@CurrentYear>=@year-@YearCount)

 62     BEGIN

 63         --声明游标

 64         DECLARE hotKeywordsIndex CURSOR 

 65         FOR SELECT * FROM NPU_Core.dbo.Keyword

 66         OPEN hotKeywordsIndex

 67         FETCH NEXT FROM hotKeywordsIndex INTO @KeywordIdInt,@KeywordId,@KeyWordName

 68                 ,@ForeignName,@IsTopic

 69         WHILE @@FETCH_STATUS = 0

 70         BEGIN

 71             --每次重新赋值

 72             SET @TotalCount = 0;

 73             SET @lastYearCount = 0;

 74             PRINT '=============='+CAST(@CurrentYear AS VARCHAR(20))+'==============='

 75             SELECT @TotalCount = COUNT(0) FROM View_ShareBib2Keywords WHERE KeywordIdInt =@KeywordIdInt

 76             AND [Year] = @CurrentYear

 77             

 78             SELECT @lastYearCount = COUNT(0) FROM View_ShareBib2Keywords WHERE KeywordIdInt =@KeywordIdInt

 79             AND [Year] = (@CurrentYear-1)

 80             --PRINT CAST(@TotalCount AS VARCHAR(20))+'<-current-------last->'+CAST(@lastYearCount AS VARCHAR(20))

 81             --增长数量

 82             SET @AmplificationNum = @TotalCount-@lastYearCount;

 83             --增长幅度

 84             IF @lastYearCount!=0 AND @lastYearCount!=1

 85             BEGIN

 86                 SET @Amplification = (@TotalCount-@lastYearCount)/@lastYearCount

 87                 --增长因素

 88                 SET @AmpliFactor = @AmplificationNum*@Amplification;

 89                 --如果增幅为负增长

 90                 IF(@TotalCount<@lastYearCount)

 91                 BEGIN

 92                     SET @Amplification = -round((@lastYearCount-@TotalCount)/@lastYearCount,3);

 93                     SET @AmpliFactor = -@AmpliFactor;

 94                     --PRINT '|||'+CAST(@Amplification AS VARCHAR(20))

 95                 END

 96             END

 97             ELSE

 98             BEGIN

 99                 SET @Amplification = (@TotalCount-@lastYearCount)/1.00;

100                 SET @AmpliFactor = 0;

101             END

102             IF @TotalCount IS NULL

103                 SET @TotalCount = 0;

104         

105             INSERT INTO Pt_FutureAmplification VALUES(

106                 @KeywordIdInt,

107                 @KeywordId,

108                 @KeyWordName,

109                 @ForeignName,

110                 @IsTopic,

111                 @CurrentYear,

112                 @TotalCount,

113                 @groupIntId,

114                 @AmplificationNum,

115                 @Amplification,

116                 @AmpliFactor

117             );

118         --执行下一次游标操作

119         FETCH NEXT FROM  hotKeywordsIndex INTO @KeywordIdInt,@KeywordId,@KeyWordName

120             ,@ForeignName,@IsTopic

121         END

122         --关闭游标

123         CLOSE hotKeywordsIndex

124         --释放资源

125         DEALLOCATE hotKeywordsIndex

126         SET @CurrentYear = @CurrentYear-1;

127     END

128     

129         SELECT top ((@TopNum)) * FROM #tbResult

130         WHERE HotYear = ((@year-2))

131          ORDER BY TotalCount DESC,HotYear DESC

132     IF @@ERROR=0

133         COMMIT TRANSACTION Pt_FutureAmplification -- 提交事务处理

134     ELSE

135         ROLLBACK TRANSACTION Pt_FutureAmplification   --事务回滚

136 END