Question

我尝试了该查询的几次迭代，并不断出现语法错误。我曾经尝试过使其成为子查询，但是通过内部联接，它出现了其他语法错误。任何建议将不胜感激。

我正在尝试拉每个工作人员的联系人。

SELECT Stafflist.Staff, Count(distinct Contact) as count
FROM Contacts INNER JOIN
     StaffList
     ON Contacts.ID = Stafflist.ID
WHERE ((Contacts.Date) Between #1/1/2020# And #1/5/2020#) AND Contacts.status='Finished')
GROUP BY Staff,
ORDER BY Staff;

Answer 1

MS Access不支持COUNT(DISTINCT)。但是您可以使用子查询：

SELECT Stafflist.Staff, Count(Contct) as count
FROM (SELECT DISTINCT Stafflist.Staff, Contacts.Contact
      FROM Contacts INNER JOIN
           StaffList
           ON Contacts.ID = Stafflist.ID
      WHERE Contacts.Date Between #1/1/2020# And #1/5/2020# AND
            Contacts.status = 'Finished'
     ) as SC
GROUP BY Staff,
ORDER BY Staff;

Microsoft Access->具有内部联接和多项选择的非重复计数

1 个答案: