I have this code which works fine:
$args = array( 'post_type' => 'brands', 'meta_query' => array( array( 'key' => 'br_type', 'value' => 'Aviation' )), 'posts_per_page' => -1, 'meta_key' => 'br_name', 'orderby' => 'meta_value', 'order' => 'ASC', 'fields' => 'ids' );
However, I need to order first by ascending order by another custom field
"br_category" and then by the name
br_name. I am not sure how to implement this.