CREATE TABLE IF NOT EXISTS chain_sync_filter (
	id integer primary key autoincrement not null,
	chain_sync_id integer not null,
	flags bytea default null,
	flags_start bytea default null,
	count integer not null default 0,
	digest char(64) not null,
	CONSTRAINT fk_chain_sync
		FOREIGN KEY(chain_sync_id)
			REFERENCES chain_sync(id)
);