从2个日期之间的单独表中计算2列

Question

我有一个查询，使用子查询计算2个独立表中的2列，这有效。现在，我必须在此查询中实现根据呼叫记录的日期过滤掉这些结果的能力。我将发布我正在使用的查询：

    FirefoxOptions ffOptions = new FirefoxOptions();
    options.setBinary("C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe"); //Location where Firefox is installed

    DesiredCapabilities capabilities = DesiredCapabilities.firefox();
    capabilities.setCapability("moz:firefoxOptions", options);

    FirefoxDriver driver = new FirefoxDriver(capabilities);
    driver.get("http://www.google.com");

好的，所以表调用存储日期，其PK是CallID。 CallToLineOfficers和CallToMembers都是桥表，它们也只包含CallID和MemberID。使用当前查询，日期被注释掉，该日期范围应仅返回所有名称，但计数1应出现在1个人的名下。

我尝试将Call.CallID加入两个桥表＆＃39; CallID没有任何运气，但我认为这是正确的方法。有人能指点我正确的方向吗？我搞不清楚了。 （我尽力解释这个问题，所以如果你需要更多信息，请告诉我。）

更新：这是我得到的截图：

根据样本中提供的日期，带有日期的新结果应为：

SELECT (m.FirstName || " " || m.LastName) AS Members,
   (
       SELECT count(CallToLineOfficers.MemberID) 
         FROM CallToLineOfficers
        WHERE CallToLineOfficers.MemberID = m.MemberID
   )
+  (
       SELECT count(CallToMembers.MemberID) 
         FROM CallToMembers
        WHERE CallToMembers.MemberID = m.MemberID
   ) AS Tally
FROM Members AS m, Call, CallToMembers, CallToLineOfficers
Join Call on CallToMembers.CallID = Call.CallID
and CallToLineOfficers.CallID = Call.CallI
WHERE m.FirstName <> 'None'
-- and Call.Date between '2017-03-21' and '2017-03-22'
GROUP BY m.MemberID
ORDER BY m.LastName ASC;

Answer 1

目前，子查询仅过滤成员ID。因此，对于外部查询中的任何成员ID，它们将返回完整计数。

要减少计数，您必须在子查询中进行过滤：

SELECT (FirstName || " " || LastName) AS Members,
   (
       SELECT count(*)
         FROM CallToLineOfficers
         JOIN Call USING (CallID)
        WHERE MemberID = m.MemberID
          AND Date BETWEEN '2017-03-21' AND '2017-03-22'
   )
+  (
       SELECT count(*)
         FROM CallToMembers
         JOIN Call USING (CallID)
        WHERE MemberID = m.MemberID
          AND Date BETWEEN '2017-03-21' AND '2017-03-22'
   ) AS Tally
FROM Members AS m
WHERE FirstName <> 'None'
ORDER BY LastName ASC;