Question

如何在我的SQL调用中说明日期范围为07/01/2013 - 09/30/2013的特定时间（从0500时至0600）？

我想使用MOPACTIVITY.MOPSTART字段。这个例子显示了07/01 - 09/30的所有内容。我只需要0500hrs - 0600hrs在同一日期范围内的那些。

谢谢！

FROM MOPUSER.MOPACTIVITY
WHERE TO_CHAR(MOPACTIVITY.MOPSTART, 'yyyy-mm-dd hh24:mi') BETWEEN '2013-07-01 00:00:01' AND '2013-09-30 23:59:59'

Answer 1

做两个比较，一个用于日期，一个用于时间：

FROM MOPUSER.MOPACTIVITY
WHERE TO_CHAR(MOPACTIVITY.MOPSTART, 'yyyy-mm-dd') BETWEEN '2013-07-01' AND '2013-09-30' and
      TO_CHAR(MOPACTIVITY.MOPSTART, 'hh24:mi') BETWEEN '05:00' AND '05:59'

您还可以使用hour()简化第二个条件：

FROM MOPUSER.MOPACTIVITY
WHERE TO_CHAR(MOPACTIVITY.MOPSTART, 'yyyy-mm-dd') BETWEEN '2013-07-01' AND '2013-09-30' and
      hour(MOPACTIVITY.MOPSTART) = 5

Answer 2

我是怎么做到的。我更喜欢@Gordon Linoff的答案！

SELECT MOPACTIVITY.MOPID ,
TO_CHAR(MOPACTIVITY.MOPSTART, 'yyyy-mm-dd hh24:mi') AS MOPSTART_DATE,
TO_CHAR(MOPACTIVITY.MOPEND, 'yyyy-mm-dd hh24:mi') AS MOPEND_DATE,
MOPACTIVITY.MOPCREATOR,
MOPACTIVITY.MOPIMPLEMENTOR
FROM MOPUSER.MOPACTIVITY
WHERE TO_CHAR(MOPACTIVITY.MOPSTART, 'yyyy-mm-dd') BETWEEN '2013-07-01' AND '2013-09-30'
AND to_number(to_char(MOPACTIVITY.MOPSTART, 'sssss')) between 18000 and 21600

Order by MOPACTIVITY.MOPID

Answer 3

可能会在MOPSTART上利用索引（如果有的话）的方法是这样的：

WHERE
    MOPACTIVITY.MOPSTART >= DATE '2013-07-01'
    AND
    MOPACTIVITY.MOPSTART < DATE '2013-09-30' + 1
    AND
    TO_CHAR(MOPACTIVITY.MOPSTART, 'HH24') = '05'

这假设您不想要包含06:00。

SQL特定时间和特定日期范围

3 个答案: