Group by ()

BigQueryDb2 (LUW)MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite200520072009201120132015201720192021⊘ 3.5.7 - 3.40.0⚠ 2008R2 - 2022a✓ 9.5+⊘ 8.3 - 9.4✓ 18c+a⚠ 11gR1 - 12cR2a⊘ 5.0 - 8.0.31⊘ 5.1 - 10.10✓ 9.7+⊘ 2.0
  1. Does not return one row on empty input