sql - 仅当 sum 大于某个值时才返回行

Question

我构建了这个 SQL 查询，它搜索所有保单号码并返回所有多个 PPOLNO 的货币值的总和:

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 >= 特定值时才返回它们。这是可能的吗？我试过这个:

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

但无济于事。我也试过输入 WHERE SUM >= 5000，但同样，没有。

任何帮助将不胜感激。

乔希

Answer 1

每当您需要对聚合(SUM 是)执行“WHERE”子句时，您都需要使用 HAVING条款。

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