Question

我正在尝试使用最新的时间戳返回带有与其链接的注释的任务。尽管此查询有效，但它并未一致地返回最新的时间戳。还有另一种方法吗？

SELECT DISTINCT  tasks.TaskID, tasks.desc, tasks.startdate, tasks.active, notes.note,          max(notes.NoteDate) 
FROM tasks INNER JOIN notes ON tasks.TaskID=notes.NoteID 
WHERE notes.NoteDate >= curdate() 
GROUP BY tasks.TaskID

Answer 1

尝试以下方面的内容：

SELECT tasks.TaskID, tasks.desc, tasks.startdate, tasks.active, notes.note,          notes.NoteDate
FROM tasks INNER JOIN notes ON tasks.TaskID=notes.NoteID 
order by NoteDate Desc 
limit 1

更新，如果您想要多行（例如在上一天注明）：

SELECT tasks.TaskID, tasks.desc, tasks.startdate, tasks.active, notes.note,          notes.NoteDate
FROM tasks INNER JOIN notes ON tasks.TaskID=notes.NoteID 
where notes.NoteDate > date_sub(current_date(),interval 1 day)
order by NoteDate Desc

Mysql - 最近的时间戳记多个记录

1 个答案: