如何結合聚合SQL查詢和普通查詢？

我在SQL Server 2005中有一個我想要彙總數據的表，這裏是一個例子。如何結合聚合SQL查詢和普通查詢？

JobName  ProductionCounter  StartDate    EndDate    CounterName  Stage 
---------------------------------------------------------------------------------------------------------- 

200   23      2012-08-30 13:45:00       Kilograms   Final 
200   2      2012-08-30 13:45:00       Bars    Final 
    [...] 
200   46      2012-08-30 13:45:00 2012-08-30 17:23:00 Kilograms   Final 
200   4      2012-08-30 13:45:00 2012-08-30 17:23:00 Bars    Final 
300   20      2012-08-30 13:45:00       Kilograms   1st 
300   10      2012-08-30 18:12:00       Bars    1st 
    [...] 
300   40      2012-08-30 18:12:00 2012-08-30 19:17:00 Kilograms   1st 
300   20      2012-08-30 18:12:00 2012-08-30 19:17:00 Bars    1st

我想這種格式分爲以下

JobName  TotalKilos  TotalBars  StartDate    EndDate    Stage 
----------------------------------------------------------------------------------------------- 
200   69    6    2012-08-30 13:45:00 2012-08-30 17:23:00 Final 
300   60    30    2012-08-30 18:12:00 2012-08-30 19:17:00 1st

這讓我意識到我什麼都不知道SQL。我曾嘗試以下作爲一個開始

SELECT JobName, SUM(ProductionCounter) 
FROM vwOeeInterval 
WHERE (CounterName = 'Kilos') 
GROUP BY JobName 

SELECT JobName, SUM(ProductionCounter) 
FROM vwOeeInterval 
WHERE (CounterName = 'Bars') 
GROUP BY JobName

我的問題是：

如何合併到一條查詢？
我如何查詢列如StartDate和Stage？特別是在作業完成之前EndDate未填寫？

任何指針將不勝感激。

來源

2012-08-31 Tim

您需要先按數據分組，然後應用數據透視。 – ClearLogic

在這裏你去：

SELECT 
JobName, 
SUM(CASE CounterName WHEN 'Kilos' THEN ProductionCounter ELSE 0 END) AS SumKilos, 
SUM(CASE CounterName WHEN 'Bars' THEN ProductionCounter ELSE 0 END) AS SumBars, 
MIN(StartDate), 
MAX(COALESCE(EndDate, 'undefined date')), 
MAX(Stage) 
FROM vwOeeInterval 
WHERE CounterName IN ('Kilos', 'Bars') 
GROUP BY JobName;

不知道這MAX(COALESCE(EndDate, 'undefined date'))作品在SQL Server中，因爲數據類型可能會發生衝突。當你想替換NULL值時，你只需要COALESCE（）。如果它不起作用，只需執行MAX（EndDate）即可。

來源

2012-08-31 13:59:50 fancyPants

您可以將它們組合起來

SELECT 
    JobName, CounterName, SUM(ProductionCounter), 
    MIN(StartDate), MAX(EndDate), MAX(Stage) 
FROM vwOeeInterval 
GROUP BY JobName , CounterName

與

HAVING MAX(EndDate) > SomeDate OR MAX(EndDate) is Null

來源

2012-08-31 13:50:30 podiluska

篩選他們試試這個，也許這就是你需要：

SELECT JobName, SUM(TotalKilos), SUM(ProductionCounter), MAX(StartDate) , MAX(EndDate), MAX(Stage) 
    GROUP BY JobName , CounterName, StartDate, EndDate 
    --Optional: 
    WHERE EndDate IS NOT NULL

注意：第一階段只在工作字母順序，如果你有更大的起始字母，那麼'F'就不起作用。然後

SELECT JobName, 
     SUM(CASE WHEN CounterName = 'Kilos' THEN ProductionCounter ELSE 0 END) AS TotalKilos, 
     SUM(CASE WHEN CounterName = 'Bars' THEN ProductionCounter ELSE 0 END) AS TotalBars 
    FROM vwOeeInterval 
    GROUP BY JobName;

，包了休息，也許是：

來源

2012-08-31 13:53:58

要結合你的查詢

SELECT JobName, 
     SUM(CASE WHEN CounterName = 'Kilos' THEN ProductionCounter ELSE 0 END) AS TotalKilos, 
     SUM(CASE WHEN CounterName = 'Bars' THEN ProductionCounter ELSE 0 END) AS TotalBars, 
     MIN(StartDate) AS StartDate, 
     MAX(EndDate) AS EndDate, 
     MAX(Stage) AS Stage 
    FROM vwOeeInterval 
    GROUP BY JobName;

來源

2012-08-31 13:55:05

匿名downvoter會照顧解釋他們的反對嗎？ –

select jobname, max(bars) as "TotalBars", max(kg) as "Total Kilos", sd as "Start date", ed as "End date" from(
SELECT JobName, if(countername="bars",SUM(ProductionCounter),null) as "bars" , if(countername="kilograms",SUM(ProductionCounter),null) as "kg" , min(startdate) as sd, max(enddate) as ed 
FROM vwOeeInterval 
GROUP BY JobName , CounterName) t 
group by jobname

來源

2012-08-31 14:13:29 m4573r

如何結合聚合SQL查詢和普通查詢？

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