true, false outside of is

BigQueryDb2 (LUW)MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite200520072009201120132015201720192021✓ 3.23.1+a⊘ 3.5.7 - 3.22.0⊘ 2008R2 - 2019✓ 8.3+a⊘ 11gR1 - 21c✓ 5.0+a✓ 5.1+a✓ 11.5.0+a⊘ 9.7 - 11.1✓ 2.0+a
  1. Only true and false, not unknown. Use null instead