self.cur.execute('CREATE TABLE IF NOT EXISTS users (id INTEGER, telegram_id NUMERIC, PRIMARY KEY(id))')
self.cur.execute('CREATE TABLE IF NOT EXISTS feeds (id INTEGER, link TEXT, PRIMARY KEY(id))')
self.cur.execute('CREATE TABLE IF NOT EXISTS subscribes (user_id INTEGER, feed_id INTEGER, FOREIGN KEY(user_id) REFERENCES users(id), FOREIGN KEY(feed_id) REFERENCES feeds(id))')
self.cur.execute('CREATE TABLE IF NOT EXISTS feeds_last_items (feed_id INTEGER, link TEXT, title TEXT, description TEXT, date NUMERIC, FOREIGN KEY(feed_id) REFERENCES feeds(id))')