function declarer_champs_extras($champs, $tables){
	// ajoutons les champs un par un
	foreach ($champs as $c){
		$table = table_objet_sql($c->table);
		if (isset($tables[$table]) and $c->champ and $c->sql) {
			$tables[$table]['field'][$c->champ] = $c->sql;
		}
	}	
	return $tables;
}