$vid = 4; db_query("DELETE FROM td USING {term_data} td LEFT JOIN {term_node} tn ON td.tid = tn.tid WHERE tn.tid IS NULL AND td.vid = %d", $vid); ?>
Deleting Taxonomies.
$vid = 4;
db_query("DELETE FROM td USING {term_data} td LEFT JOIN {term_node} tn ON td.tid = tn.tid WHERE tn.tid IS NULL AND td.vid = %d", $vid);
?>
Deleting Taxonomies.