Oto mój przykład zapytania: SELECT nickname, CASE class_id WHEN 1 THEN 'Druid' WHEN 2 THEN 'Necromancer' WHEN 3 THEN 'Mage' WHEN 4 THEN 'Priest' WHEN 5 THEN 'Warrior' WHEN 6 THEN 'Stalker' WHEN 7 THEN 'Paladin' WHEN 8 THEN 'Psionic' END class_name, ROUND(AVG(level),2) level,...