使用INFORMATION_SCHEMA作为root,错误说它不存在?

时间:2013-06-24 20:28:19

标签: php mysql information-schema

我正在使用这个php代码来拉出我创建的测试表中的列标题。然而,每当我尝试运行代码时,它都会给我这个错误:There was an error running the query [Table 'meta_test.information_schema' doesn't exist]从我在网上看到的信息看起来我的代码应该可行,但这是我第一次尝试这样的事情。这是我的代码:

    $camp = $_POST['campaign'];
    $query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA WHERE TABLE_NAME = '$camp'";

    try{
        if(!$result = $db->query($query)){
            die('There was an error running the query [' . $db->error . ']');
        }

        echo "<pre>";
        print_r($result);
        echo "</pre>";
    }catch(exception $e){
        echo $e;
    }

1 个答案:

答案 0 :(得分:1)

您需要指定表名:

SELECT COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = '$camp'