Question

我正在使用两个存储的函数，它们工作，当放入SELECT时，它们返回正确的值，但是当我尝试减少并获取这些值的子集时，我得到一个没有警告的空集。

这是我的SQL。

SELECT
    DISTINCT
    e.ims_event_id,
    e.name,
    e.begin_time bUTC,
    e.end_time eUTC,
    DATE_FORMAT(DATE_ADD(e.begin_time, INTERVAL ptat_getTZOffset(pp.subject_to_dlst, tz.delta_time, e.begin_time, country) MINUTE),'%H:%i') begin_local,
    DATE_FORMAT(DATE_ADD(e.end_time, INTERVAL ptat_getTZOffset(pp.subject_to_dlst, tz.delta_time, e.end_time, country) MINUTE),'%H:%i') end_local,
    DATE_FORMAT(ptat_getEventHalfPoint(pp.subject_to_dlst, tz.delta_time, e.begin_time, e.duration, country),'%H:%i') begin_local_halfPoint,
    DATE_FORMAT(DATE_ADD(pp.start_time, INTERVAL ptat_getTZOffset(pp.subject_to_dlst, tz.delta_time, pp.start_time, country) MINUTE),'%H:%i') ptat_begin,
    DATE_FORMAT(DATE_ADD(pp.end_time, INTERVAL ptat_getTZOffset(pp.subject_to_dlst, tz.delta_time, pp.end_time, country) MINUTE),'%H:%i') ptat_end 
FROM
    event e
    JOIN service s ON e.service_uid = s.service_uid
    JOIN service_ptc sp ON s.service_uid = sp.service_uid
    JOIN service_primetime_period spp ON s.service_uid = spp.service_uid
    JOIN primetime_period pp ON spp.primetime_period_uid = pp.primetime_period_uid
    JOIN time_zone tz ON pp.time_zone_id = tz.time_zone_id 
    JOIN dlst_info dli ON country = 'US' AND dli.year = DATE_FORMAT(e.begin_time,'%Y')
WHERE
    (POW(2,DATE_FORMAT(DATE_ADD(e.begin_time,INTERVAL tz.delta_time HOUR), '%w'))&pp.weekdays) > 0 AND
    e.end_time > NOW() AND 
    e.begin_time < DATE_ADD(NOW(),INTERVAL 8 DAY) AND
    DATE_FORMAT(ptat_getEventHalfPoint(pp.subject_to_dlst, tz.delta_time, e.begin_time, e.duration, country),'%H:%i') BETWEEN
DATE_FORMAT(DATE_ADD(pp.start_time, INTERVAL ptat_getTZOffset(pp.subject_to_dlst, tz.delta_time, pp.start_time, country) MINUTE),'%H:%i') AND
    DATE_FORMAT(DATE_ADD(pp.end_time, INTERVAL ptat_getTZOffset(pp.subject_to_dlst, tz.delta_time, pp.end_time, country) MINUTE),'%H:%i')
ORDER BY e.begin_time;

添加WHERE子句的最后3行，返回零。它们被复制并粘贴到SELECT中并且工作得很好。

我非常困惑！

另外，当使用字符串进行比较时（即...... = '19：00'），我得到了结果。任何人都知道什么是错的？

编辑：不包含where子句时返回的示例行。

|    370617336 | Dancing With the Stars             | 2012-04-04 05:00:00 | 2012-04-04 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371138764 | Escape Routes                      | 2012-04-08 05:00:00 | 2012-04-08 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371138733 | Who Do You Think You Are?          | 2012-04-07 05:00:00 | 2012-04-07 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371138638 | The Biggest Loser                  | 2012-04-04 05:00:00 | 2012-04-04 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371676424 | Survivor: One World                | 2012-04-05 05:00:00 | 2012-04-05 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371676489 | Undercover Boss                    | 2012-04-07 05:00:00 | 2012-04-07 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371676386 | NCIS                               | 2012-04-04 05:00:00 | 2012-04-04 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371412875 | Bones                              | 2012-04-03 05:00:00 | 2012-04-03 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371413006 | American Idol                      | 2012-04-06 05:00:00 | 2012-04-06 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371413149 | Bones                              | 2012-04-10 05:00:00 | 2012-04-10 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    371413041 | The Finder                         | 2012-04-07 05:00:00 | 2012-04-07 06:00:00 | 19:00       | 20:00     | 19:30                 | 19:00      | 22:00    |
|    370617100 | Once Upon a Time                   | 2012-04-09 05:00:00 | 2012-04-09 06:00:00 | 19:00       | 20:00     | 19:30                 | 18:00      | 22:00    |
|    371138792 | Harry's Law                        | 2012-04-09 05:00:00 | 2012-04-09 06:00:00 | 19:00       | 20:00     | 19:30                 | 18:00      | 22:00    |
|    371676549 | The Amazing Race                   | 2012-04-09 05:00:00 | 2012-04-09 06:00:00 | 19:00       | 20:00     | 19:30                 | 18:00      | 22:00    |

编辑＃2：编辑＃2：我从所有表中获取了所有字段，并将其合并到沙箱中的一个表中。我把我的两个函数都设置为静态（总是假设我们在夏季夏令时季节）并添加了样本数据。有用！所以我不得不回溯我的猜测，这与SQL语法或逻辑没有任何关系。某些列，某些连接或表失败。我也间歇地得到这个错误：

Error | 1366 | Incorrect decimal value: '' for column '' at row -1

如果我可以附加一个SQL文件，我可以附加我的测试模式，我不想在这里粘贴它。

Answer 1

我在做项目时也发现了一点。

想要从DB过滤记录，这些记录在凌晨5点到凌晨1点之间。我想在查询字符串中传递，AM或PM参数。但是mysql date_format总是需要24小时格式。上午或下午并不重要。

select  poll_voting_result_id,poll_master_id,date_voting,date_format(date_voting,'%Y-%m-%d %r') as 12_hour_format_R,
date_format(date_voting,'%Y-%m-%d %H:%i:%s %p') as 24_hour_format_P from poll_voting_result 
where up_down = 0 
and 
poll_master_id = '11' 
and 
date(date_voting) = '2013-03-20' 
and date_format(date_voting,'%H:%i:%s %r') BETWEEN '05:00 AM' and '13:01:06 PM' 
order by date_voting ASC


select  poll_voting_result_id,poll_master_id,date_voting,date_format(date_voting,'%Y-%m-%d %r') as 12_hour_format_R,
date_format(date_voting,'%Y-%m-%d %H:%i:%s %p') as 24_hour_format_P from poll_voting_result 
where up_down = 0 
and 
poll_master_id = '11' 
and 
date(date_voting) = '2013-03-20' 
and date_format(date_voting,'%H:%i:%s %p') BETWEEN '05:00' and '13:01:06' 
order by date_voting ASC

以上两个查询工作正常。但我需要通过

BETWEEN '05：00 AM'和'01：01：06 PM'

使用BETWEEN的MySQL DATE_FORMAT不起作用

1 个答案: