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BigQueryDb2 (LUW)MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite200520072009201120132015201720192021⊘ 3.5.7 - 3.40.0a⊘ 2008R2 - 2022a⊘ 8.3 - 15✓ 12cR2+⚠ 12cR1⊘ 11gR1 - 11gR2b⚠ 8.0.16 - 8.0.31⊘ 8.0.12 - 8.0.14⚠ 8.0.11⊘ 5.0 - 5.7a⚠ 10.5 - 10.10⊘ 5.1 - 10.4a⚠ 11.5.0 - 11.5.7⊘ 9.7 - 11.1⊘ 2.0
  1. Some functions conform (by “coincidence”)
  2. Some minor omissions