intersect, select w/o from

BigQueryDb2 (LUW)MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite2005200720092011201320152017201920213.5.72008R28.311gR1 - 21c8.0.315.0 - 8.0.3010.35.1 - 10.29.7 - 11.5.82.0