选择* WHERE状态＆lt;＆gt; '已删除'或状态＆lt;＆gt; 'completed'AND update_datetime＆lt; unix_timestamp（now（） - 间隔7天）

Question

如果update_datetime列超过7天（MySQL版本2013-04-11 11:22： 44）。

这是我虚弱而失败的尝试：

WHERE
    status <> 'deleted'
 OR status <> 'completed'
AND update_datetime < unix_timestamp( now() - interval 7 day )

Answer 1

WHERE
    status <> 'deleted'
AND (
        (update_datetime < unix_timestamp( now() - interval 7 day ) AND status = 'completed')
    OR  (update_datetime >= unix_timestamp( now() - interval 7 day ))
)

如果update_datetime是DATETIME列，请改用：

WHERE
    status <> 'deleted'
AND (
        (update_datetime < DATE_SUB(NOW(), INTERVAL 7 day) AND status = 'completed')
    OR  (update_datetime >= DATE_SUB(NOW(), INTERVAL 7 day))
)

Answer 2

你是说这个吗？

WHERE
    (status <> 'deleted'
 OR status <> 'completed')
AND update_datetime < unix_timestamp( now() - interval 7 day )

等于

WHERE
    (not status in ('deleted', 'completed'))
AND update_datetime < unix_timestamp( now() - interval 7 day )