Question

我有以下查询

SELECT * FROM ".TBL_FOOT_GAMES." ORDER BY id DESC LIMIT 1

我需要在字段WHERE上添加date_confirmed子句。

date_confirmed是DATETIME类型。

我只需要选择当前时刻7天内的行。

更多代码

SELECT g.home_user, g.away_user, g.home_score, g.away_score, g.id AS gameid, g.date_confirmed, 
       hu.username AS home_username, au.username AS away_username, ht.team AS home_team, at.team AS away_team
       FROM tbl_foot_games g INNER JOIN tbl_users hu ON hu.id = g.home_user INNER JOIN tbl_users au ON au.id = g.away_user 
       INNER JOIN tbl_foot_teams ht ON ht.id = g.home_team INNER JOIN tbl_foot_teams at ON at.id = g.away_team
       WHERE (g.type = '1' OR g.type = '2' OR g.type = '3' OR g.type = '4') AND g.status = '3' AND g.date_confirmed BETWEEN NOW() AND DATE_SUB(NOW(), INTERVAL 50 WEEK)
       ORDER BY g.id DESC LIMIT 1

该语句正常工作，直到我为50周的间隔添加WHERE子句。

Answer 1

未来只假设七天（看起来你将列出即将举行的足球比赛）：

SELECT *
  FROM `tbl`
 WHERE `date_confirmed` BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 1 WEEK)
 ORDER BY `id` DESC
 LIMIT 1

请在下次首先阅读the documentation;答案都在那里。

Answer 2

... WHERE date_confirmed BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 7 DAY) ...

Answer 3

查看NOW()和DATE_SUB()函数。

这些应该让你在7天前创建一个日期，然后在你的where子句中你可以检查datetime列是否大于这个。

Answer 4

您可以使用MySQL的date_sub函数来查看差异是否为7天或更短。

SELECT * FROM ".TBL_FOOT_GAMES." 
WHERE DATE_ADD(DATE_CONFIRMED, INTERVAL '7 00:00:00' DAYS_SECOND) >= TIMESTAMP(CURDATE())
ORDER BY id DESC LIMIT 1

如果您有兴趣只看到与当前日期有7天的差异（忽略时间值），那么您可以使用DATEDIFF这样的功能：

SELECT * FROM ".TBL_FOOT_GAMES." 
WHERE DATEDIFF(CURDATE(), DATE_CONFIRMED) <= 7
ORDER BY id DESC LIMIT 1

希望使用DATETIME从数据库中选择一行

4 个答案: