类似于我的上一个问题。这是我的代码:
SELECT TR.ITEMNO,
SUM ( TR.TRANS_QUAN * CASE TR.TRANS_TYPE WHEN 'PO' THEN 1 ELSE 0 END ) AS SUM_IN,
SUM ( TR.TRANS_QUAN * CASE TR.TRANS_TYPE WHEN 'MH' THEN 1 ELSE 0 END ) AS SUM_OUT
FROM IQMS.TRANSLOG TR
WHERE TR.ITEMNO = '200672'
GROUP BY TR.ITEMNO
HAVING SUM ( TR.TRANS_QUAN * CASE TR.TRANS_TYPE WHEN 'PO' THEN 1 ELSE -1 END ) < 0
ORDER BY TR.ITEMNO
代码运行良好,但没有对 SUM_OUT 求和。我知道一个事实,但是有一些数字需要相加。我有什么明显的遗漏吗?提前致谢!!:)