Issue with term_group when running $wpdb query

Hi,

I’m not sure why this is happening but, the query below keeps returning no results when I DO have an element’s term_group set to 2 in wp_terms.

To troubleshoot, I replaced the term_group condition by a slug condition (i.e. t.slug = chicago) and that worked fine…

So, I’m very puzzled… Thanks to anyone who can help!

global $wpdb;
$query = "SELECT
		taxo.*,
		t.*
	FROM
		$wpdb->term_taxonomy taxo,
		$wpdb->terms t
	WHERE
		taxo.term_id = t.term_id AND
		taxo.taxonomy = 'post_tag' AND
		t.term_group = 2
	ORDER BY count DESC
	LIMIT 10";

	$companies = $wpdb->get_results($query);