我需要从查询中排除一些记录,其中日期名称在排除值'excl_days'中设置。
简单的功能正在发挥作用:
SELECT post_id, start, end, excl_days FROM `mytable_events`
WHERE `excl_days` NOT LIKE '%".$today_name."%'
ORDER BY DATE(start) DESC
但是在使用JOIN和GROUP之后,我添加NOT LIKE后结果为空。没有不喜欢一切正常。
SELECT o1.post_id, o1.start, o1.end, o1.excl_days
FROM `mytable_events` o1
JOIN `mytable_posts` o2 ON o1.post_id = o2.ID
WHERE `o1.excl_days` NOT LIKE '%".$today_name."%'
GROUP BY o1.post_id ORDER BY DATE(o1.start) DESC
完整查询是:
SELECT o1.post_id, o1.start, o1.end, o1.excl_days
FROM `mytable_events` o1
JOIN `mytable_posts` o2 ON o1.post_id = o2.ID
WHERE DATE(o1.start) <= '".$today."' AND DATE(o1.end) >= '".$today."'
AND o2.post_type = 'events' AND o2.post_status = 'publish'
AND `o1.excl_days` NOT LIKE '%".$today_name."%'
GROUP BY o1.post_id ORDER BY DATE(o1.start) DESC
如何使其发挥作用?谢谢你的帮助。
答案 0 :(得分:1)
试试这个:
SELECT o1.post_id, o1.start, o1.end, o1.excl_days
FROM `mytable_events` o1
JOIN `mytable_posts` o2 ON (o1.post_id = o2.ID
AND o1.excl_days NOT LIKE '%".$today_name."%')
GROUP BY o1.post_id ORDER BY DATE(o1.start) DESC
答案 1 :(得分:0)
尝试摆脱where子句中的后退标记。它们是不必要的,没有正确形成。
SELECT o1.post_id, o1.start, o1.end, o1.excl_days
FROM `honchar_events` o1
JOIN `honchar_posts` o2 ON o1.post_id = o2.ID
WHERE o1.excl_days NOT LIKE '%".$today_name."%'
GROUP BY o1.post_id ORDER BY DATE(o1.start) DESC