僅當sum大於值時才返回行

Question

我已經構建了這個SQL Query，它搜索所有策略號並返回所有多個PPOLNO貨幣值的總和：

SELECT PPOLNO, SUM(PPRMPD) AS SUM 
FROM PFNTLPYMTH 
WHERE SUM(PPRMPD) >= 5000 
  AND  ((PYEAR=2012 AND PMONTH >=3 
  AND PDAY >=27) OR (PYEAR=2013 
  AND PYEAR <=3 AND PDAY<=27))
GROUP BY PPOLNO

我正在做的只是在SUM> =特定值時才返回它們。 這可能嗎？怎么樣？ 我試過這個：

SELECT PPOLNO, SUM(PPRMPD) AS SUM FROM PFNTLPYMTH
WHERE SUM(PPRMPD) >= 5000 AND ((PYEAR=2012 AND PMONTH >=3 AND PDAY >=27) OR (PYEAR=2013 
AND PYEAR <=3 AND PDAY<=27)) GROUP BY PPOLNO

但無濟於事。 我剛剛嘗試輸入WHERE SUM> = 5000，但是再一次沒有。

任何幫助將不勝感激。

• 玩笑

Answer 1

每當您需要在聚合（ SUM是）上執行“WHERE”子句時，您需要使用HAVING子句。

SELECT PPOLNO, SUM(PPRMPD) AS SUM FROM PFNTLPYMTH
WHERE ((PYEAR=2012 AND PMONTH >=3 AND PDAY >=27) OR (PYEAR=2013 
AND PYEAR <=3 AND PDAY<=27)) GROUP BY PPOLNO
HAVING SUM(PPRMPD) >= 5000

Answer 2

該謂詞Where第聚集之前應用，聚集之后應用謂詞（過濾器），使用Having條款...嘗試

SELECT PPOLNO, SUM(PPRMPD) AS SUM 
FROM PFNTLPYMTH 
WHERE  ((PYEAR=2012 AND PMONTH >=3 
  AND PDAY >=27) OR (PYEAR=2013 
  AND PYEAR <=3 AND PDAY<=27))
GROUP BY PPOLNO
Having SUM(PPRMPD) >= 5000