Question

嗨，你可以帮助我，我不知道我的错误在哪里。这是我的代码：

    $capacitance =@mysql_query ("SELECT DISTINCT wwpn,  SUBSTR(val, 1, LENGTH(val) / 2) as capacitor,
                             SUBSTR(val, LENGTH(val) / 2+1) as capasitance
                             FROM   bom_csv where boardnumber ='$board' and qty<>'' and qty !='qty'");
    @mysql_query($capacitance,$connect)or die("Failed to execute query:<br />" . mysql_error(). "<br />" . mysql_errno());
    while($row = mysql_fetch_array($capacitance))
     {
         $capacitor = $row['capacitor'];
         $capacitance =$row['capasitance'];
         $adi_pn = $row['wwpn'];
     }

和我在执行它时的错误：

Failed to execute query:
    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 'Resource id #4' at line 1
1064

Answer 1

您的第一个mysql_query正在返回资源（结果集）并将其分配给$capacitance。当您在下一行mysql_query再次执行$capacitance时，资源会变成字符串 - "Resource #4"，可能是 - 这不是正确的SQL。

另请注意，“Bobby Tables没有去我的学校”并不一定如此：正确地逃避你的字符串。

$capacitance = @mysql_query ("SELECT DISTINCT wwpn,  SUBSTR(val, 1, LENGTH(val) / 2) as capacitor,
                             SUBSTR(val, LENGTH(val) / 2+1) as capasitance
                             FROM   bom_csv where boardnumber ='" . mysql_real_escape_string($board) . "' and qty<>'' and qty !='qty'", $connect)
or die("Failed to execute query:<br />" . mysql_error(). "<br />" . mysql_errno());
while ...

使用select语句的MySQL语法错误

1 个答案: