Error 1054 in MySql query

Question

I have following query:

    $query="SELECT language_value, votes, user_id FROM labels WHERE approved=1 AND label_value=".
            $data[$i]['label_value']." AND language=".$language_id;

I have got the error:

Error Number: 1054
Unknown column 'AccountPagesView.a_book' in 'where clause'

But 'AccountPagesView.a_book' is value of $data[$i]['label_value'] and isn't a column. Where have I made a mistake?

Answer 1

You should enclose any string values in MySQL in ' :

$query= "SELECT language_value, votes, user_id FROM labels WHERE approved=1 AND label_value='".
        $data[$i]['label_value']."' AND language='".$language_id."'";

(I just took a guess, which are string-like columns.)

EDIT

As pointed out by @vstm: make sure the the values, you insert here, are properly escaped.

Answer 2

尝试这个

$query="SELECT language_value, votes, user_id FROM labels WHERE approved=1 AND label_value='".$data[$i]['label_value']."' AND language='".$language_id."'";