[Nero_3D]

Код:

//========================================[CMD:FRIENDS]========================================================//
CMD:friends(playerid, params[])
{
	new query[128], name[MAX_PLAYER_NAME];
	GetPlayerName(playerid, name, sizeof(name));

	format(query, sizeof(query), "SELECT * FROM `friendsdb` WHERE `UserDBID` = %i", PlayerInfo[playerid][pDBID]);
	mysql_query_callback(playerid, query, "OnPlayerRequestFriends", REQUEST_FRIEND_THREAD);
	return 1;
}

That page should help you, documentation for r6
https://sampwiki.blast.hk/wiki/MySQL#mysql_query_callback