function getTemplateGroups($params, $response = array())
{
    global $wpdb;
    $table_name = TemplateData::get_tplgroup_table_name();
    $query = "SELECT * FROM {$table_name}";
    $where = "";
    if (isset($params['where'])) {
        $where[] = $params['where'];
    }
    if (!empty($where)) {
        $query .= " where " . implode(" and ", $where);
    }
    $response = $wpdb->get_results($query, ARRAY_A);
    if (empty($response)) {
        return array();
    }
    return $response;
}