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2012 年にデータを探していたときにうまく機能する次のクエリがあります。現在は 2013 年で、少し混乱しています。2012 年 1 月、2012 年 2 月 .... のような日付形式で結果を返すクエリを実行しようとしましたが、2013 年 1 月、2013 年 2 月もあります。どうすればこれを達成できますか? ありがとう

SELECT 
    fp.name                                                  AS [Name],
    YEAR(fp.date)                                            AS [Year],
    SUM(CASE WHEN MONTH(fp.date) = '1'   THEN 1 ELSE 0 END)  AS [JAN],       
    SUM(CASE WHEN MONTH(fp.date) = '2'   THEN 1 ELSE 0 END)  AS [FEB],
    SUM(CASE WHEN MONTH(fp.date) = '3'   THEN 1 ELSE 0 END)  AS [MAR],
    SUM(CASE WHEN MONTH(fp.date) = '4'   THEN 1 ELSE 0 END)  AS [APR],
    SUM(CASE WHEN MONTH(fp.date) = '5'   THEN 1 ELSE 0 END)  AS [MAY],
    SUM(CASE WHEN MONTH(fp.date) = '6'   THEN 1 ELSE 0 END)  AS [JUN],
    SUM(CASE WHEN MONTH(fp.date) = '7'   THEN 1 ELSE 0 END)  AS [JUL],
    SUM(CASE WHEN MONTH(fp.date) = '8'   THEN 1 ELSE 0 END)  AS [AUG],
    SUM(CASE WHEN MONTH(fp.date) = '9'   THEN 1 ELSE 0 END)  AS [SEP],
    SUM(CASE WHEN MONTH(fp.date) = '10'  THEN 1 ELSE 0 END)  AS [OCT],
    SUM(CASE WHEN MONTH(fp.date) = '11'  THEN 1 ELSE 0 END)  AS [NOV],
    SUM(CASE WHEN MONTH(fp.date) = '12'  THEN 1 ELSE 0 END)  AS [DEC],
    COUNT(*)                                                 AS [Overall]

    FROM f_page_views fp


    WHERE fp.date > '2012-01-01 00:00:00.000'
    AND fp.date < '2013-12-31 00:00:00.000'

    GROUP BY 
    year(fp.date)
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1 に答える 1

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次のようなものを使用できます。

SELECT  fp.Name,
        [Jan 2012] = SUM(CASE WHEN fp.Date >= '20120101' AND fp.Date < '20120201' THEN 1 ELSE 0 END),
        [Feb 2012] = SUM(CASE WHEN fp.Date >= '20120201' AND fp.Date < '20120301' THEN 1 ELSE 0 END),
        [Mar 2012] = SUM(CASE WHEN fp.Date >= '20120301' AND fp.Date < '20120401' THEN 1 ELSE 0 END),
        [Apr 2012] = SUM(CASE WHEN fp.Date >= '20120401' AND fp.Date < '20120501' THEN 1 ELSE 0 END),
        [May 2012] = SUM(CASE WHEN fp.Date >= '20120501' AND fp.Date < '20120601' THEN 1 ELSE 0 END),
        [Jun 2012] = SUM(CASE WHEN fp.Date >= '20120601' AND fp.Date < '20120701' THEN 1 ELSE 0 END),
        [Jul 2012] = SUM(CASE WHEN fp.Date >= '20120701' AND fp.Date < '20120801' THEN 1 ELSE 0 END),
        [Aug 2012] = SUM(CASE WHEN fp.Date >= '20120801' AND fp.Date < '20120901' THEN 1 ELSE 0 END),
        [Sep 2012] = SUM(CASE WHEN fp.Date >= '20120901' AND fp.Date < '20121001' THEN 1 ELSE 0 END),
        [Oct 2012] = SUM(CASE WHEN fp.Date >= '20121001' AND fp.Date < '20121101' THEN 1 ELSE 0 END),
        [Nov 2012] = SUM(CASE WHEN fp.Date >= '20121101' AND fp.Date < '20121201' THEN 1 ELSE 0 END),
        [Dec 2012] = SUM(CASE WHEN fp.Date >= '20121201' AND fp.Date < '20130101' THEN 1 ELSE 0 END),
        [Jan 2013] = SUM(CASE WHEN fp.Date >= '20130101' AND fp.Date < '20130201' THEN 1 ELSE 0 END),
        [Feb 2013] = SUM(CASE WHEN fp.Date >= '20130201' AND fp.Date < '20130301' THEN 1 ELSE 0 END),
        [Mar 2013] = SUM(CASE WHEN fp.Date >= '20130301' AND fp.Date < '20130401' THEN 1 ELSE 0 END),
        [Apr 2013] = SUM(CASE WHEN fp.Date >= '20130401' AND fp.Date < '20130501' THEN 1 ELSE 0 END),
        [May 2013] = SUM(CASE WHEN fp.Date >= '20130501' AND fp.Date < '20130601' THEN 1 ELSE 0 END),
        [Jun 2013] = SUM(CASE WHEN fp.Date >= '20130601' AND fp.Date < '20130701' THEN 1 ELSE 0 END),
        [Jul 2013] = SUM(CASE WHEN fp.Date >= '20130701' AND fp.Date < '20130801' THEN 1 ELSE 0 END),
        [Aug 2013] = SUM(CASE WHEN fp.Date >= '20130801' AND fp.Date < '20130901' THEN 1 ELSE 0 END),
        [Sep 2013] = SUM(CASE WHEN fp.Date >= '20130901' AND fp.Date < '20131001' THEN 1 ELSE 0 END),
        [Oct 2013] = SUM(CASE WHEN fp.Date >= '20131001' AND fp.Date < '20131101' THEN 1 ELSE 0 END),
        [Nov 2013] = SUM(CASE WHEN fp.Date >= '20131101' AND fp.Date < '20131201' THEN 1 ELSE 0 END),
        [Dec 2013] = SUM(CASE WHEN fp.Date >= '20131201' AND fp.Date < '20140101' THEN 1 ELSE 0 END)
FROM    f_page_views fp
WHERE   fp.date > '2012-01-01 00:00:00.000'
AND     fp.date < '2013-12-31 00:00:00.000'
GROUP BY fp.Name;

WHEN MONTH(fp.Date) = 1 AND YEAR(fp.Date) = 2012注意してください、私が使用したのではなく、WHEN fp.Date >= '20120101' AND fp.Date < '20120201'これは同じことを意味しますが、特にインデックスがある場合は、後者の方がパフォーマンスが向上しますfp.Date

別の方法は、PIVOT関数を使用することです。

WITH Data AS
(   SELECT  fp.Name,
            ViewMonth = DATEADD(MONTH, DATEDIFF(MONTH, 0, fp.Date), 0),
            Value = 1
    FROM    f_Page_Views
    WHERE   fp.date > '2012-01-01 00:00:00.000'
    AND     fp.date < '2013-12-31 00:00:00.000'
)
SELECT  *
FROM    Data
        PIVOT
        (   SUM(Value)
            FOR ViewMonth IN 
            (   [20120101], [20120201], [20120301], [20120401], [20120501], [20120601],
                [20120701], [20120801], [20120901], [20121001], [20121101], [20121201],
                [20130101], [20130201], [20130301], [20130401], [20130501], [20130601],
                [20130701], [20130801], [20130901], [20131001], [20131101], [20131201]
            ) pvt

指定された日付範囲に基づいて動的に作成される列が必要な場合は、上記のいずれかの方法で動的SQLを使用できます。

DECLARE @SQL NVARCHAR(MAX) = '';
DECLARE @StartDate DATETIME = '20120101',
        @EndDate DATETIME = '20131231';


SELECT  @SQL = @SQL + ',' + QUOTENAME(LEFT(DATENAME(MONTH, StartDate), 3) + ' ' + DATENAME(YEAR, StartDate)) + ' = SUM(CASE WHEN fp.Date >= ''' + CONVERT(VARCHAR, StartDate, 112) + ''' AND fp.Date < ''' + CONVERT(VARCHAR, EndDate, 112) + ''' THEN 1 ELSE 0 END)'
FROM    (   SELECT  [StartDate] = DATEADD(MONTH, Number, @StartDate),
                    [EndDate] = DATEADD(MONTH, 1 + Number, @StartDate)
            FROM    Master..spt_values
            WHERE   Number BETWEEN 0 AND DATEDIFF(MONTH, @StartDate, @Enddate)
            AND     Type = 'P'
        ) d

SET @SQL = 'SELECT  fp.Name' + @SQL + ' FROM f_page_views fp WHERE fp.date > @Start AND fp.Date < @End GROUP BY fp.Name';

EXECUTE SP_EXECUTESQL @SQL, N'@Start DATETIME, @End DATETIME', @StartDate, @EndDate;

また

DECLARE @SQL NVARCHAR(MAX) = '';
DECLARE @StartDate DATETIME = '20120101',
        @EndDate DATETIME = '20131231';

SELECT  @SQL = @SQL + ',' + QUOTENAME(CONVERT(VARCHAR, DATEADD(MONTH, Number, @StartDate), 112))
FROM    Master..spt_values
WHERE   Number BETWEEN 0 AND DATEDIFF(MONTH, @StartDate, @Enddate)
AND     Type = 'P';

SET @SQL = 'WITH Data AS
            (   SELECT  fp.Name,
                        ViewMonth = DATEADD(MONTH, DATEDIFF(MONTH, 0, fp.Date), 0),
                        Value = 1
                FROM    f_Page_Views fp
                WHERE   fp.date > @Start
                AND     fp.date < @End
            )
            SELECT  *
            FROM    Data
                    PIVOT
                    (   SUM(Value)
                        FOR ViewMonth IN (' + STUFF(@SQL, 1, 1, '') + ')
                    ) pvt';

EXECUTE SP_EXECUTESQL @SQL, N'@Start DATETIME, @End DATETIME', @StartDate, @EndDate;
于 2013-03-11T12:30:16.083 に答える