将多个查询的结果合并到一张表中

Question

我有一个表格，它通过 MS Access 2013 中的表格填充其条目。我附上了下表部分的图像。使用 StartTime 条目，我创建了一个查询，显示上午 8 点到 9 点之间发生的所有事务，另一个查询显示上午 9 点到 10 点之间发生的所有事务，依此类推。问题是我有很多疑问。有没有办法将所有查询中的语句组合成一个 sql 语句，并将结果输出到一个数据表中，列标题为“8AM-9AM”、“9AM-10AM”、“10AM-11AM”等。谢谢。

查询示例：

SELECT TimeValue([StartTime]) 
FROM Table1 
WHERE (TimeValue([StartTime]) Between '8:00:00 AM' And '8:59:59 AM')

Main Table

Query Result 8 AM to 9 AM

Answer 1

以下是我所做的，可能会对您有所帮助，或者至少可以帮助您入门。我为您希望输出的每个小时（8-9、9-10、10-11 等）创建了查询。然后我创建了一个最终查询，它使用UNION 处理所有查询。

您可能已经有的查询示例：

SELECT TIMEVALUE(T1.StartTime)
FROM Table1 AS T1
WHERE (TIMEVALUE(T1.StartTime) Between '8:00:00 AM' And '8:59:59 AM');

第二：

SELECT TIMEVALUE(T1.StartTime)
FROM Table1 AS T1
WHERE (TIMEVALUE(T1.StartTime) Between '9:00:00 AM' And '9:59:59 AM');

等等……

最终查询示例：

SELECT '' AS [8-9],'' AS [9-10],'' AS [10-11]
FROM [8-9AM]
UNION
SELECT T1.*,'',''
FROM [8-9AM] AS T1
UNION
SELECT '',T2.*,''
FROM [9-10AM] AS T2
UNION ALL SELECT '','',T3.*
FROM [10-11AM] AS T3
(and so on...);

注意：我必须创建一个空白的第一行才能正确命名我机器上的列。不知道你是否会遇到同样的问题。

编辑：可能是一种更简单的方法，只使用一个表：

SELECT ID,
 SWITCH(
     TIMEVALUE(T1.StartTime) BETWEEN '8:00:00 AM' And '8:59:59 AM', 
TIMEVALUE(T1.StartTime)
    ,TIMEVALUE(T1.StartTime) NOT BETWEEN '8:00:00 AM' And '8:59:59 AM', ''
) AS [8-9],
 SWITCH(
     TIMEVALUE(T1.StartTime) BETWEEN '9:00:00 AM' And '9:59:59 AM', TIMEVALUE(T1.StartTime)
    ,TIMEVALUE(T1.StartTime) NOT BETWEEN '9:00:00 AM' And '9:59:59 AM', ''
) AS [9-10],
 SWITCH(
     TIMEVALUE(T1.StartTime) BETWEEN '10:00:00 AM' And '10:59:59 AM', 
TIMEVALUE(T1.StartTime)
    ,TIMEVALUE(T1.StartTime) NOT BETWEEN '10:00:00 AM' And '10:59:59 AM', ''
) AS [10-11],
SWITCH(
     TIMEVALUE(T1.StartTime) BETWEEN '11:00:00 AM' And '11:59:59 AM', TIMEVALUE(T1.StartTime)
    ,TIMEVALUE(T1.StartTime) NOT BETWEEN '11:00:00 AM' And '11:59:59 AM', ''
) AS [11-12],
SWITCH(
     TIMEVALUE(T1.StartTime) BETWEEN '12:00:00 AM' And '12:59:59 AM', 
TIMEVALUE(T1.StartTime)
    ,TIMEVALUE(T1.StartTime) NOT BETWEEN '12:00:00 AM' And '12:59:59 AM', ''
) AS [12-1],
SWITCH(
     TIMEVALUE(T1.StartTime) BETWEEN '1:00:00 AM' And '1:59:59 AM', TIMEVALUE(T1.StartTime)
    ,TIMEVALUE(T1.StartTime) NOT BETWEEN '1:00:00 AM' And '1:59:59 AM', ''
) AS [1-2]
FROM Table1 AS T1