php - 查询时间戳间隔中的mysql错误

Question

我有以下voting_IP 表：

+-----------+-------------+------+-----+---------+----------------+
| Field     | Type        | Null | Key | Default | Extra          |
+-----------+-------------+------+-----+---------+----------------+
| ip_id     | int(11)     | NO   | PRI | NULL    | auto_increment |
| mes_id_fk | int(11)     | YES  | MUL | NULL    |                |
| ip_add    | varchar(40) | YES  |     | NULL    |                |
| timestamp | datetime    | YES  |     | NULL    |                |
+-----------+-------------+------+-----+---------+----------------+

我想运行这个有错误但不知道如何纠正的查询？

$ip_sql=mysql_query("select ip_add from Voting_IP where mes_id_fk='$id' and ip_add='$ip' and timestamp > (DATE_ADD(now(), INTERVAL -1 HOUR);)");

我也试过这个：

$ip_sql=mysql_query("select ip_add from Voting_IP where (mes_id_fk='$id' and ip_add='$ip' and timestamp > (DATE_ADD(now(), INTERVAL -1 HOUR);))");

Answer 1

INTERVAL -1 HOUR);))");
                 ^-----here is the error extra semicolon 

你可以看到错误mysql_query("your query ") or die(mysql_error())

替换为：

INTERVAL -1 HOUR))");