Одинаковые имена в столбцах 2 таблиц

$qSearch = mysql_query("SELECT * FROM data, categories WHERE data.cat = categories.id",$db);

$qSearch = mysql_query("SELECT data.title as data_title, categories.title as cat_title FROM data, categories WHERE data.cat = categories.id",$db);

$qSearch = mysql_query("SELECT
                data.id AS data_id,
                data.title AS data_title,
                data.text AS data_text,
                data.cat AS data_cat,
                categories.id AS categories_id,
                categories.title AS categories_title
            FROM
                data,
                categories
            WHERE
                data.cat = categories.id
            AND
                data.text LIKE '%$search%'
            OR
                data.title LIKE '%$search%'", $db);
            if(mysql_num_rows($qSearch) > 0)
            {
                while($sSearch = mysql_fetch_array($qSearch))
                {
                    printf ("
        <p class='search_th'><a href='view_post.php?id=%s'>%s</a></p>
        <p><strong>Категория:</strong> %s</p>
        <p>%s</p>
    ",$sSearch["data_id"], $sSearch["data_title"], $sSearch["categories_title"], $sSearch["data_text"]);

            AND
                (data.text LIKE '%$search%'
            OR
                data.title LIKE '%$search%')

data.cat = categories.id AND data.text LIKE '%$search%' OR data.title LIKE '%$search%'