public void upgradeTables() {
		
		// Add blocks_built into LOGIN
		if (_sqLite.isTable("login")) {
			try {
				_sqLite.query("ALTER TABLE login ADD COLUMN blocks_placed INT;");
				_log.info("[Statistics] Table LOGIN upgraded - column blocks_placed added");
			} catch (SQLException e) {
				
			}
		}
		
		// Add blocks_broken into LOGIN
		if (_sqLite.isTable("login")) {
			try {
				_sqLite.query("ALTER TABLE login ADD COLUMN blocks_broken INT;");
				_log.info("[Statistics] Table LOGIN upgraded - column blocks_broken added");
			} catch (SQLException e) {
				
			}
		}
	}