douba9776 2013-06-24 20:28
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使用INFORMATION_SCHEMA作为root,错误说它不存在?

I'm using this php code to pull out the column headers in a test table I had created. However whenever I try to run the code it gives me this error: There was an error running the query [Table 'meta_test.information_schema' doesn't exist] from the information I've seen online it looks like my code should work, however this is the first time I've attempted something like this. Here is my code:

    $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;
    }
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1条回答 默认 最新

  • dqusbxh44823 2013-06-24 20:29
    关注

    You need to specify the table name:

    SELECT COLUMN_NAME
    FROM INFORMATION_SCHEMA.COLUMNS
    WHERE TABLE_NAME = '$camp'
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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