1DROP TRIGGER IF EXISTS update_sessions_updated_at;
 2DROP TRIGGER IF EXISTS update_messages_updated_at;
 3DROP TRIGGER IF EXISTS update_files_updated_at;
 4
 5DROP TRIGGER IF EXISTS update_session_message_count_on_delete;
 6DROP TRIGGER IF EXISTS update_session_message_count_on_insert;
 7
 8DROP TABLE IF EXISTS sessions;
 9DROP TABLE IF EXISTS messages;
10DROP TABLE IF EXISTS files;