Question

得到类似的查询：

 UPDATE trails SET route = '$route', distance = '$distance', desc = '$description' WHERE route='$route'

它正在返回此错误：

 Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'desc = 'Bla bla bla' WHERE route='London to Dublin'' at line 1

谢谢！

Answer 1

DESC是保留关键字。用后面的滴答声引用它：

UPDATE trails SET route = '...', distance = '...', `desc` = '...' WHERE route = '...'

顺便说一句，您的代码中存在更严重的问题。例如SQL注入。

Answer 2

[这不是正确答案。]您应该在将字符串传递给查询之前将其转义。

请参阅此处：http://php.net/manual/en/mysqli.real-escape-string.php或此处，如果您使用旧的弃用功能http://php.net/manual/en/function.mysql-real-escape-string.php

Answer 3

首先：

像那样逃避你的变量

  $route = mysqli_real_escape_string ($route ) ; // if you are using mysqli
  $route = mysql_real_escape_string ($route ) ; // if you are using mysql

 and so on .. with other variables

试试这个：

   UPDATE trails SET route = '".$route."', distance = '".$distance."', `desc` = '".$description."' WHERE route='".$route."'

obs：desc是mysql的保留关键字，所以请使用其他单词或为其做反对。

Answer 4

试试这个

mysql_query("UPDATE trails SET `route` = '".mysql_real_escape_string($route)."', `distance` = '".mysql_real_escape_string($distance)."', `desc` = '".mysql_real_escape_string($description)."' WHERE route='".mysql_real_escape_string($route)."'");

MySQL查询更新错误，语法？

4 个答案: