Sql 对一组数据应用不同的时间段分组

下面是我两年前开始使用的一种模式，它在我的遗留代码中反复出现

它使用不同的时间段对相同的数据进行有效分组

有没有一个标准的方法，我应该接近这个或是这个冗长的方法，因为我会得到好

提出这个问题的另一种方式是，如何使下面的内容更加简洁？ 所有4个查询都来自同一个数据源，并且所有4个查询都进入同一个输出表。这4个查询是否可以合并为一个较短的脚本

DECLARE @myDate DATETIME = CONVERT(DATETIME,CONVERT(VARCHAR(11),GETDATE(),106)); 
DECLARE @myFirstDateLastMth CHAR(8) =CONVERT(CHAR(6),DATEADD(mm,-1,@myDate-1),112) + '01';
DECLARE @myFirstDateCurrentMth CHAR(8) =CONVERT(CHAR(6),DATEADD(mm,0,@myDate-1),112) + '01'; 

DELETE FROM WH.dbo.tb_myTable

--day on day==========
INSERT INTO WH.dbo.tb_myTable
SELECT 
  TimePeriod =
    CASE 
        WHEN x.DateKey = CONVERT(VARCHAR(11),@myDate - 1,112) THEN 'Day'                    
        WHEN x.DateKey = CONVERT(VARCHAR(11),@myDate - 2,112) THEN 'Day-1'  
    END,
  Game              = x.Name,
  Score             = SUM(x.Score),
  Ticks             = SUM(x.Ticks),
  ScorePerTick = SUM(x.Score)/SUM(x.Ticks)
FROM #LimitedBetinfo x
WHEREx.DateKey >= CONVERT(VARCHAR(11),@myDate - 2,112)
GROUP BY
  CASE 
    WHEN x.DateKey = CONVERT(VARCHAR(11),@myDate - 1,112) THEN 'Day'                    
    WHEN x.DateKey = CONVERT(VARCHAR(11),@myDate - 2,112) THEN 'Day-1'  
  END,
  x.Name;

--wk on wk==========
INSERT INTO WH.dbo.tb_myTable
SELECT 
  TimePeriod =
        CASE 
        WHEN x.DateKey >= CONVERT(VARCHAR(11),@myDate - 7,112) THEN 'Week'                  
        WHEN x.DateKey < CONVERT(VARCHAR(11),@myDate - 7,112) 
                    AND x.DateKey >= CONVERT(VARCHAR(11),@myDate - 14,112)  
                            THEN 'Week-1'
    END,
  Game               = x.Name,
  Score              = SUM(x.Score),
  Ticks              = SUM(x.Ticks),
  ScorePerTick = SUM(x.Score)/SUM(x.Ticks)
FROM #LimitedBetinfo x
WHERE   x.DateKey >= CONVERT(VARCHAR(11),@myDate - 14,112)
GROUP BY
  CASE 
    WHEN x.DateKey >= CONVERT(VARCHAR(11),@myDate - 7,112) THEN 'Week'                  
    WHEN x.DateKey < CONVERT(VARCHAR(11),@myDate - 7,112) 
                AND x.DateKey >= CONVERT(VARCHAR(11),@myDate - 14,112)  
                        THEN 'Week-1'
    END,
  g.Name;                   


--mth on mth==========
INSERT INTO WH.dbo.tb_myTable
SELECT 
  TimePeriod =
    CASE 
        WHEN x.DateKey >= CONVERT(VARCHAR(11),@myDate - 28,112) THEN 'Month'                    
        WHEN x.DateKey < CONVERT(VARCHAR(11),@myDate - 28,112) 
                        AND x.DateKey >= CONVERT(VARCHAR(11),@myDate - 56,112)  
                                THEN 'Month-1'
    END,
  Game               = x.Name,
  Score              = SUM(x.Score),
  Ticks              = SUM(x.Ticks),
  ScorePerTick = SUM(x.Score)/SUM(x.Ticks)
FROM #LimitedBetinfo x
WHERE   x.DateKey >=  CONVERT(VARCHAR(11),@myDate - 56,112)
GROUP BY
  CASE 
    WHEN x.DateKey >= CONVERT(VARCHAR(11),@myDate - 28,112) THEN 'Month'                    
    WHEN x.DateKey < CONVERT(VARCHAR(11),@myDate - 28,112) 
                AND x.DateKey >= CONVERT(VARCHAR(11),@myDate - 56,112)  
                        THEN 'Month-1'
  END,
  g.Name;                   


--MTD and PrevCalMonth==========
INSERT INTO WH.dbo.tb_myTable
SELECT 
  TimePeriod
  = CASE 
        WHEN  x.DateKey >= @myFirstDateCurrentMth   THEN 'MTD'
        WHEN  x.DateKey < @myFirstDateCurrentMth  
                AND  x.DateKey >=@myFirstDateLastMth THEN 'PrevCalMonth'                                      
  END,
  Game              = x.Name,
  Score             = SUM(x.Score),
  Ticks             = SUM(x.Ticks),
  ScorePerTick = SUM(x.Score)/SUM(x.Ticks)
FROM #LimitedBetinfo x
WHERE   x.DateKey >=  CONVERT(CHAR(6),DATEADD(mm,-1,@myDate-1),112) + '01'
GROUP BY
  CASE 
    WHEN  x.DateKey >= @myFirstDateCurrentMth   THEN 'MTD'
    WHEN  x.DateKey < @myFirstDateCurrentMth  
            AND  x.DateKey >=@myFirstDateLastMth THEN 'PrevCalMonth'            
  END,
  g.Name;   

---

您可以创建此存储过程

CREATE PROCEDURE InsertData
    @minLimit date,
    @maxLimit date,
    @minTerm nvarchar(50),
    @maxTerm nvarchar(50)
AS
BEGIN
    SET NOCOUNT ON;

    INSERT INTO tb_myTable
    SELECT 
        [TimePeriod]        = CASE WHEN x.DateKey >= @maxLimit THEN @maxTerm ELSE @minTerm END,
        [Game]              = x.Name,
        [Score]             = SUM(x.[Score]),
        [Ticks]             = SUM(x.[Ticks]),
        [ScorePerTick]      = SUM(x.[Score])/SUM(x.[Ticks])

    FROM #LimitedBetinfo x
    WHERE x.DateKey >= @minLimit
    GROUP BY 
        CASE WHEN x.DateKey >= @maxLimit THEN @maxTerm ELSE @minTerm END,
        x.Name

END
GO

像这样使用

TRUNCATE TABLE tb_myTable

DECLARE @today date = cast(getdate() as date)
DECLARE @yesterday date = dateadd(day, -1, @today)
EXECUTE dbo.InsertData @yesterday, @today, N'Day-1', N'Day' 

DECLARE @thisweek date = DATEADD(ww, DATEDIFF(ww,0,GETDATE()), 0)
DECLARE @lastweek date = DATEADD(ww, -1, @thisweek)
EXECUTE dbo.InsertData @lastweek, @thisweek, N'Week-1', N'Week' 

DECLARE @prev28 date = dateadd(day, -28, @today)
DECLARE @prev56 date = dateadd(day, -56, @today)
EXECUTE dbo.InsertData @prev56, @prev28, N'Month-1', N'Month' 

DECLARE @thismonth date = DATEADD(mm, DATEDIFF(mm,0,GETDATE()), 0)
DECLARE @lastmonth date = DATEADD(mm, -1, @thismonth)
EXECUTE dbo.InsertData @lastmonth, @thismonth, N'PrevCalMonth', N'MTD' 

---

对弗雷德的回答可能有所改进。不是在速度方面，只是通过删除额外的大小写来提高可读性/可修改性。作为建议，我还将传递两个字符串（例如DAY和DAY-1）替换为一个字符串，并将另一个字符串作为concat；然而，这将导致PrevCalMonth显示为MTD-1，尽管有一些解决方法

CREATE PROCEDURE InsertData
  @minLimit date, @maxLimit date, @string nvarchar(50)
AS
  INSERT INTO tb_myTable
  SELECT TimePeriod, Name, SUM(Score) Score, SUM(Ticks) Ticks, 
    SUM(Score)/SUM(Ticks) ScorePerTick 
  FROM
  (
    SELECT *, /* or 'Name, Score, Ticks,' */
      TimePeriod = CASE WHEN x.DateKey >= @maxLimit THEN @string ELSE @string+'-1' END
    FROM #LimitedBetinfo x
    WHERE x.DateKey >= @minLimit
  ) A
  GROUP BY TimePeriod, Name
GO

然后像这样使用：

TRUNCATE TABLE tb_myTable

DECLARE @today date = cast(getdate() as date)
DECLARE @yesterday date = dateadd(day, -1, @today)
EXECUTE dbo.InsertData @yesterday, @today, N'Day' 

DECLARE @thisweek date = DATEADD(ww, DATEDIFF(ww,0,GETDATE()), 0)
DECLARE @lastweek date = DATEADD(ww, -1, @thisweek)
EXECUTE dbo.InsertData @lastweek, @thisweek, N'Week' 

DECLARE @prev28 date = dateadd(day, -28, @today)
DECLARE @prev56 date = dateadd(day, -56, @today)
EXECUTE dbo.InsertData @prev56, @prev28, N'Month' 

DECLARE @thismonth date = DATEADD(mm, DATEDIFF(mm,0,GETDATE()), 0)
DECLARE @lastmonth date = DATEADD(mm, -1, @thismonth)
EXECUTE dbo.InsertData @lastmonth, @thismonth, N'MTD' 

---

看来这可能是你的工作

很抱歉，我不会为您提供问题的确切解决方案，但select的模型形式应如下所示：

select * from
(
    select *,count(*) amount from
    (
        select datepart(HOUR, login_time) as hour, 
               datepart(MINUTE, login_time) as minute, 
               cmd as name
        from sys.sysprocesses
    ) tmp
    group by cube(tmp.hour, tmp.minute, tmp.name)
) tmp2
where tmp2.name is not null and
      (
      (tmp2.hour is not null and tmp2.minute is null) or
      (tmp2.hour is null and tmp2.minute is not null)
      )

---

一减-这个立方体为你的问题生成了太多的数据。所以它需要被过滤掉。一个大的优点是，您只需要一个select into临时表。

我将它变成一个insert语句

我现在不希望使用分组集、多维数据集或汇总，因为我不知道如何限制在单个日期组中计算的行数小于在较大时间段组中计算的行数

因此，为了避免这种情况发生，您可以创建一个公共表表达式；使用mycte作为…子查询…、临时表、表变量或包含时间段的XML格式的文本对象，每个时间段一行/元素

此脚本还可以在定义了更多或更少的时间段的情况下运行，以在从应用程序到服务器的一次行程中获得所有结果

下面是一个使用temp table的示例，也可以很容易地将其转换为表格变量：

--Define time periods
CREATE TABLE #TempTimePeriods (
    TimePeriod VARCHAR(20) PRIMARY KEY,
    TPBegin VARCHAR(11) NOT NULL,
    TPEnd VARCHAR(11) NULL
);

DECLARE @myDate DATETIME = '2012-10-10';
DECLARE @myDateMinusOne DATETIME = DATEADD(dd, -1, @myDate);
INSERT INTO #TempTimePeriods ( TimePeriod, TPBegin, TPEnd )
SELECT [TimePeriod], CONVERT(VARCHAR(11), TPBegin, 112) TPBegin, CONVERT(VARCHAR(11), TPEnd, 112) TPEnd
FROM (
    SELECT 'Day'          [TimePeriod], @myDate - 1 TPBegin, @myDate -  1 TPEnd UNION ALL
    SELECT 'Day-1'        [TimePeriod], @myDate - 2 TPBegin, @myDate -  2 TPEnd UNION ALL
    SELECT 'Week'         [TimePeriod], @myDate - 7 TPBegin,                                  NULL TPEnd UNION ALL
    SELECT 'Week-1'       [TimePeriod], @myDate - 14 TPBegin, @myDate -  8 TPEnd UNION ALL
    SELECT 'Month'        [TimePeriod], @myDate - 28 TPBegin,                                  NULL TPEnd UNION ALL
    SELECT 'Month-1'      [TimePeriod], @myDate - 56 TPBegin, @myDate - 29 TPEnd UNION ALL
    SELECT 'MTD'          [TimePeriod], DATEADD(dd, -1 * DAY(@myDateMinusOne) + 1, @myDateMinusOne) TPBegin, NULL TPEnd UNION ALL
    SELECT 'PrevCalMonth' [TimePeriod], DATEADD(mm,-1,DATEADD(dd, -1 * DAY(@myDateMinusOne) + 1, @myDateMinusOne)) TPBegin, DATEADD(dd, -1 * DAY(@myDateMinusOne), @myDateMinusOne) TPEnd
) TT;  

这里是主要的查询

--compute/insert results
INSERT INTO WH.dbo.tb_myTable
SELECT TimePeriods.TimePeriod,
x.Name Game,
SUM(x.Score) Score,
SUM(x.Ticks) Ticks,
CASE WHEN SUM(x.Ticks) != 0 THEN SUM(x.Score)/SUM(x.Ticks) END ScorePerTick
FROM #TempTimePeriods TimePeriods
--for periods with no data use left outer join to return 0-value results, otherwise inner join
LEFT OUTER JOIN #LimitedBetInfo x 
ON x.DateKey >= [TimePeriods].TPBegin
AND (
    [TimePeriods].TPEnd IS NULL
    OR x.DateKey <= [TimePeriods].TPEnd
)
GROUP BY TimePeriods.TimePeriod, x.Name

可运行为：

--This declare is just an example, it could be instead a parameter passed from an application
DECLARE @ThisExecutionsXmlString NVARCHAR(MAX) = N'
<TimePeriod name="Day" tpbegin="20121010" tpend="20121010" />
<TimePeriod name="Day-1" tpbegin="20121009" tpend="20121009" />
<TimePeriod name="Week" tpbegin="20121004"/>
<TimePeriod name="Week-1" tpbegin="20120927" tpend="20121004" />
<TimePeriod name="Month" tpbegin="20120913" />
<TimePeriod name="Month-1" tpbegin="20120815" tpend="20120912" />
<TimePeriod name="MTD" tpbegin="20121001" />
<TimePeriod name="PrevCalMonth" tpbegin="20120901" tpend="20120930" />
';

INSERT INTO WH.dbo.tb_myTable
EXEC dbo.GetTimePeriodAggregates @TimePeriodsXmlString=@ThisExecutionsXmlString

---

使用参数-值作为表源，并在与派生表交叉应用时将其作为参数应用

DECLARE @myDate datetime = CAST(GETDATE() AS date);
IF OBJECT_ID('WH.dbo.tb_myTable') IS NOT NULL DROP TABLE WH.dbo.tb_myTable
SELECT TimePeriod, Game, Score, Ticks, ScorePerTicks
INTO WH.dbo.tb_myTable
FROM (VALUES('Day', DATEADD(day, -1, @myDate), @myDate),
            ('Day-1', DATEADD(day, -2, @myDate), DATEADD(day, -2, @myDate)),
            ('Week', DATEADD(day, -7, @myDate), @myDate),
            ('Week-1', DATEADD(day, -14, @myDate), DATEADD(day, -8, @myDate)),
            ('Month', DATEADD(day, -28, @myDate), @myDate),
            ('Month-1', DATEADD(day, -56, @myDate), DATEADD(day, -29, @myDate)),
            ('MTD', DATEADD(DAY, 1 - DAY(@myDate), @myDate), @myDate), 
            ('PrevCalMonth', DATEADD(DAY, 1 - DAY(@myDate), DATEADD(MONTH, -1, @myDate)), DATEADD(DAY,  - DAY(@myDate), @myDate)))
RParameters(TimePeriod, BDate, EDate)
  CROSS APPLY (SELECT x.Name AS Game,
                      SUM(x.Score) AS Score,
                      SUM(x.Ticks) AS Ticks,
                      SUM(x.Score) / SUM(x.Ticks) AS ScorePerTicks
               FROM #LimitedBetinfo x
               WHERE DateKey BETWEEN RParameters.BDate AND RParameters.EDate
               GROUP BY Name) AS o

---

演示日期键的数据类型是什么？datetime还是varchar？你能详细说明一下你到底想要什么吗？除非我错过了一些东西，否则一天一组，一个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组，每个月一组；所有这些的输入数据是相同的；它们的输出表都是相同的……这四个脚本可以合并为一个脚本/过程吗。我使用了类似于10个生产存储过程中的4个，因此缩短这个示例将使我的遗留代码缩短很多。弗雷德的回答很好。+1这肯定缩短了时间。将等待进一步的建议作为可能的改进，我只建议选择时间段、名称、SUMScore、SUMTicks、SUMScore/SUMTicks FROM SELECT TimePeriod=…，*FROM。。。哪里按时间段分组，Name@Dukeling你有时间把它全部写下来作为可能的答案吗。。。。不太容易通过这么短的评论来理解你的意思，我很高兴。谢谢你的发帖。我还没有测试所有的答案；我只是对你的作品感到惊讶，所以你得到了赏金…不是最好的评判标准！我认为，如果使用一些动态sql和tb_myTable的一个添加参数，或者使用新的sp_executesql，这可能会更强大……因为这种情况会发生在几个存储过程中？

SELECT TimePeriods.TimePeriod,
x.Name Game,
SUM(x.Score) Score,
SUM(x.Ticks) Ticks,
CASE WHEN SUM(x.Ticks) != 0 THEN SUM(x.Score)/SUM(x.Ticks) END ScorePerTick
FROM (
    SELECT
    E.TimePeriod.value('./@name', 'VARCHAR(20)') TimePeriod,
    E.TimePeriod.value('./@tpbegin', 'VARCHAR(20)') TPBegin,
    E.TimePeriod.value('./@tpend', 'VARCHAR(20)') TPEnd
    FROM (
        SELECT CAST(@TimePeriodsXml AS XML) tpxml
    ) TT
    CROSS APPLY tpxml.nodes('/TimePeriod') AS E(TimePeriod)
) TimePeriods
--for periods with no data use left outer join to return 0-value results, otherwise inner join
LEFT OUTER JOIN #LimitedBetInfo x
ON x.DateKey >= [TimePeriods].TPBegin
AND (
     [TimePeriods].TPEnd IS NULL
     OR x.DateKey <= [TimePeriods].TPEnd
)
GROUP BY TimePeriods.TimePeriod, x.Name

CREATE PROCEDURE dbo.GetTimePeriodAggregates
@TimePeriodsXmlString NVARCHAR(MAX)
AS
BEGIN
SET NOCOUNT ON;
SELECT TimePeriods.TimePeriod,
x.Name Game,
SUM(x.Score) Score,
SUM(x.Ticks) Ticks,
CASE WHEN SUM(x.Ticks) != 0 THEN SUM(x.Score)/SUM(x.Ticks) END ScorePerTick
FROM (
    SELECT
    E.TimePeriod.value('./@name', 'VARCHAR(20)') TimePeriod,
    E.TimePeriod.value('./@tpbegin', 'VARCHAR(20)') TPBegin,
    E.TimePeriod.value('./@tpend', 'VARCHAR(20)') TPEnd
    FROM (
        SELECT CAST(@TimePeriodsXml AS XML) tpxml
    ) TT
    CROSS APPLY tpxml.nodes('/TimePeriod') AS E(TimePeriod)
) TimePeriods
LEFT OUTER JOIN #LimitedBetInfo x
ON x.DateKey BETWEEN TimePeriods.TPBegin AND TimePeriods.TPEnd
GROUP BY TimePeriods.TimePeriod, x.Name
END

--This declare is just an example, it could be instead a parameter passed from an application
DECLARE @ThisExecutionsXmlString NVARCHAR(MAX) = N'
<TimePeriod name="Day" tpbegin="20121010" tpend="20121010" />
<TimePeriod name="Day-1" tpbegin="20121009" tpend="20121009" />
<TimePeriod name="Week" tpbegin="20121004"/>
<TimePeriod name="Week-1" tpbegin="20120927" tpend="20121004" />
<TimePeriod name="Month" tpbegin="20120913" />
<TimePeriod name="Month-1" tpbegin="20120815" tpend="20120912" />
<TimePeriod name="MTD" tpbegin="20121001" />
<TimePeriod name="PrevCalMonth" tpbegin="20120901" tpend="20120930" />
';

INSERT INTO WH.dbo.tb_myTable
EXEC dbo.GetTimePeriodAggregates @TimePeriodsXmlString=@ThisExecutionsXmlString

DECLARE @myDate datetime = CAST(GETDATE() AS date);
IF OBJECT_ID('WH.dbo.tb_myTable') IS NOT NULL DROP TABLE WH.dbo.tb_myTable
SELECT TimePeriod, Game, Score, Ticks, ScorePerTicks
INTO WH.dbo.tb_myTable
FROM (VALUES('Day', DATEADD(day, -1, @myDate), @myDate),
            ('Day-1', DATEADD(day, -2, @myDate), DATEADD(day, -2, @myDate)),
            ('Week', DATEADD(day, -7, @myDate), @myDate),
            ('Week-1', DATEADD(day, -14, @myDate), DATEADD(day, -8, @myDate)),
            ('Month', DATEADD(day, -28, @myDate), @myDate),
            ('Month-1', DATEADD(day, -56, @myDate), DATEADD(day, -29, @myDate)),
            ('MTD', DATEADD(DAY, 1 - DAY(@myDate), @myDate), @myDate), 
            ('PrevCalMonth', DATEADD(DAY, 1 - DAY(@myDate), DATEADD(MONTH, -1, @myDate)), DATEADD(DAY,  - DAY(@myDate), @myDate)))
RParameters(TimePeriod, BDate, EDate)
  CROSS APPLY (SELECT x.Name AS Game,
                      SUM(x.Score) AS Score,
                      SUM(x.Ticks) AS Ticks,
                      SUM(x.Score) / SUM(x.Ticks) AS ScorePerTicks
               FROM #LimitedBetinfo x
               WHERE DateKey BETWEEN RParameters.BDate AND RParameters.EDate
               GROUP BY Name) AS o