ALTER TABLE user_update_events DROP CONSTRAINT IF EXISTS user_update_events_type_check; ALTER TABLE user_update_events ADD CONSTRAINT user_update_events_type_check CHECK ( event_type IN ( 'new_message', 'read_history_inbox', 'read_history_outbox', 'edit_message', 'contacts_reset', 'dialog_pinned', 'pinned_dialogs', 'dialog_unread_mark', 'peer_settings', 'delete_messages', 'dialog_filter', 'dialog_filter_order', 'dialog_filters', 'folder_peers', 'noop' ) );