如何使這兩個查詢成為具有內部聯接的單個查詢？

Question

我需要將這兩個查詢合並為一個查詢。 Keyfield1和TPOLNO應該是連接字段。 我怎么會去使之成為一個單一的查詢？

SELECT TPOLNO, SUM(TTSAMT) AS SUM FROM PFPOSTR410 WHERE 
((TTRNYY=2012 AND TTRNMM=3 AND TTRNDD>=27) OR (TTRNYY=2012 AND TTRNMM>3) OR 
(TTRNYY=2013 AND TTRNMM<=2) OR (TTRNYY=2013 AND TTRNMM=3 AND TTRNDD<=27)) 
GROUP BY TPOLNO HAVING SUM(TTSAMT)>=5000 ORDER BY TPOLNO ASC

SELECT KEYFIELD1, KEYFROBJ FROM CMRELATN WHERE RELROLETC=8

預先感謝您的指示！

• 喬希

Answer 1

如果我理解您的問題，則需要對2個表進行簡單的內部聯接：

SELECT TPOLNO, SUM(TTSAMT) AS SUM, KEYFIELD1, KEYFROBJ
FROM PFPOSTR410, CMRELATN 
WHERE 
    ((TTRNYY=2012 AND TTRNMM=3 AND TTRNDD>=27) OR (TTRNYY=2012 AND TTRNMM>3) OR 
(TTRNYY=2013 AND TTRNMM<=2) OR (TTRNYY=2013 AND TTRNMM=3 AND TTRNDD<=27))
    AND KEYFIELD1=TPOLNO
    AND RELROLETC=8
GROUP BY TPOLNO, KEYFIELD1, KEYFROBJ
HAVING SUM(TTSAMT)>=5000
ORDER BY TPOLNO ASC