[sql]
ALTER TABLE events DROP COLUMN is_active_pl;
ALTER TABLE events DROP COLUMN is_active_en;
ALTER TABLE events DROP COLUMN is_active_de;
ALTER TABLE events DROP COLUMN is_active_ru;
ALTER TABLE events DROP COLUMN is_active_es;
ALTER TABLE events ADD COLUMN is_active_pl boolean;
ALTER TABLE events ADD COLUMN is_active_en boolean;
ALTER TABLE events ADD COLUMN is_active_de boolean;
ALTER TABLE events ADD COLUMN is_active_ru boolean;
ALTER TABLE events ADD COLUMN is_active_es boolean;