SQL 服务器 - 操作顺序难度

Question

试图弄清楚如何正确地排序以获得预期的结果。我正在寻找的是 A 为真，并且 B、C 或 D 中的任何一个也为真。 Starting_Date 和 Ending_Date 在代码的前面定义。

如果我使用如下所示的 A && ((B)||(C)||(D))，则不会返回任何结果。
如果我用A && (B || C || D)，我认为在逻辑上与上述相同，同样returns没有结果。
如果我用A && B || C || D，我认为A组和B组在一起，我得到几千个结果
如果我在 Between 语句两边加上括号，我会得到一个错误（语法无效）

Declare @Starting_Date  date = '2019-01-01'
Declare @Ending_Date    date = '2019-01-31'

Select x
From y   
Where   REPORTING_UNIT = '36B11' --A
                        AND ((Closing_Date          BETWEEN @Starting_Date AND @Ending_Date) --B Closing date is between report date range (eg: episode already open before period)
                        OR  (Opening_Date           BETWEEN @Starting_Date AND @Ending_Date) --C Opening date is between report date range (eg: episode was opened at some point during the period)
                        OR  (Reverse_Opening_Date   BETWEEN @Starting_Date AND @Ending_Date)) --D Reverse opening date is between report date range (eg: episode was closed at some point, then reopened during the period)

预期结果：

1858 年是数据库表示“未关闭”的方式。因此，在此示例中，所有这些都将包括在内，但第 14 行除外，该行在我们定义的结束日期之前关闭。第 5 和第 6 行也将包括在内，因为该剧集在我们评估期间开放。

编辑：添加了编码的开始和结束日期以及一些预期结果。

Answer 1

以下是您的代码，减去了 OR 序列中的冗余括号，应该可以工作。

你对@Starting_Date和@Ending_Date的值有信心吗？

Select x
From y   
Where   REPORTING_UNIT = '36B11' --A
                        AND (Closing_Date          BETWEEN @Starting_Date AND @Ending_Date --B Closing date is between report date range (eg: episode already open before period)
                        OR  Opening_Date           BETWEEN @Starting_Date AND @Ending_Date --C Opening date is between report date range (eg: episode was opened at some point during the period)
                        OR  Reverse_Opening_Date   BETWEEN @Starting_Date AND @Ending_Date) --D Reverse opening date is between report date range (eg: episode was closed at some point, then reopened during the period)

Answer 2

保持 REPORTING_UNIT = '36B11' AND Closing_Date BETWEEN @Starting_Date AND @Ending_Date 条件在 WHERE 子句中，查看您获得的结果，然后将 OR 条件一一添加，您可能会明白为什么会发生这种情况。此外，在粗略地浏览了上面的数据之后，逻辑上应该只包含第 5 行。 BETWEEN 子句将只检查日期范围和第 5 行是否满足。

SQL 服务器 - 操作顺序难度

SQL Server - Order of Operations difficulty

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