Question

我需要完成以下内容，但需要在EntryValue上使用SUM，其中EntryType =＆＃39; C＆＃39; - EntryType =＆＃39; D＆＃39;但不知道在哪里包括它。

SELECT SUM(EntryValue) AS EntryValue, Left(Warehouse,1) AS Branch 
FROM GenJournalDetail INNER JOIN InvJournalCtl ON (GenJournalDetail.GlPeriod = InvJournalCtl.LedgPeriod) AND (GenJournalDetail.GlYear = InvJournalCtl.YearPostLedg) AND (GenJournalDetail.Journal = InvJournalCtl.GlJournal)
WHERE GenJournalDetail.GlCode = 'Z5207550' AND GlYear = '2011' AND GlPeriod = '10' 
GROUP BY Left(InvJournalCtl.Warehouse,1)

Answer 1

选择它然后将其分组;

SELECT SUM(EntryValue) AS EntryValueTotal, EntryType, Left(Warehouse,1) AS Branch 
...
GROUP BY Left(InvJournalCtl.Warehouse,1), EntryType

编辑我没有意识到你想要扣除;

SELECT
    SUM(CASE EntryType
        WHEN 'C' THEN EntryValue
        ELSE 0 END
    )
    -
    SUM(CASE EntryType
        WHEN 'D' THEN EntryValue
        ELSE 0 END
    ) AS EntryValueTotal, 
    Left(Warehouse,1) AS Branch 
FROM GenJournalDetail 
  INNER JOIN InvJournalCtl ON (GenJournalDetail.GlPeriod = InvJournalCtl.LedgPeriod) AND (GenJournalDetail.GlYear = InvJournalCtl.YearPostLedg) AND (GenJournalDetail.Journal = InvJournalCtl.GlJournal)
WHERE 
  GenJournalDetail.GlCode = 'Z5207550' AND GlYear = '2011' AND GlPeriod = '10' 
GROUP BY Left(InvJournalCtl.Warehouse,1)

Answer 2

如果您需要对列进行求和，请将其添加到select和group中：

SELECT SUM(EntryValue) AS TotEntry, ...
...
GROUP BY ...

您不需要对聚合列进行分组;你还需要过滤查询吗？

SQL选择总和查询

2 个答案: