SQL QUERY

add_action("gform_after_submission", "calculate_total", 10, 2);
function calculate_total( $entry, $form ){
	GFCommon::log_debug( __METHOD__ . '(): The Form => ' . print_r( $form, true ) );
	GFCommon::log_debug( __METHOD__ . '(): The Entry => ' . print_r( $entry, true ) );
	global $wpdb;
	$SQL = "UPDATE wp_gf_entry_meta z
		INNER JOIN (
			Select entry_id, meta_value, sum(meta_value) as total FROM wp_gf_entry_meta where form_id='168' and meta_key like '%135' OR meta_key like '%181' OR meta_key like '%296' OR meta_key like '%346' OR meta_key like '%386' OR meta_key like '%426' OR meta_key like '%546'
			group by entry_id
			)
		g on g.entry_id = z.entry_id
		set z.meta_value = g.total
		where z.meta_key='82136' and z.form_id='168'";
	$result = $wpdb->query($SQL);
	GFCommon::log_debug( __METHOD__ . '(): The Result => ' . print_r( $result, true ) );
}