Question

我为审计线索做了一个表。

CREATE TABLE IF NOT EXISTS `audit_trail_timer` (
  `_id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `remaining_duration` varchar(50) NOT NULL,
  `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`_id`)
)

现在我想选择一个时间戳是最新的行。

$query = select * from audit_trail_timer where user_id='$id' and timestamp='';

Answer 1

SELECT top 1 * FROM audit_trail_timer WHERE user_id ='$ id' 订购TIMESTAMP DESC;

Answer 2

试试这个，

  SELECT * FROM audit_trail_timer WHERE user_id='$id' 
  ORDER BY   TIMESTAMP DESC LIMIT 1

Answer 3

   try this

   SELECT * FROM audit_trail_timer WHERE user_id='$id' 
    ORDER BY TIMESTAMP  DESC LIMIT 1

Answer 4

使用

SELECT * 
FROM audit_trail_timer 
WHERE user_id = '$id'
ORDER BY `timestamp` DESC
LIMIT 1

timestamp是保留关键字

从时间戳最新的表中选择

4 个答案: