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BigQueryDb2 (LUW)DuckDBMariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite201320152017201920212023⊘ 3.51.0a⊘ 3.5.7 - 3.50.0⚠ 2025a⊘ 2008R2 - 2022⚠ 16 - 18⊘ 8.3 - 15✓ 23.26.0+b✓ 12cR2 - 23.9⚠ 12cR1⊘ 11gR1 - 11gR2⚠ 9.5.0a⚠ 8.0.16 - 9.4.0⊘ 8.0.12 - 8.0.14⚠ 8.0.11⊘ 5.0 - 5.7⚠ 12.0.2a⚠ 10.5 - 11.8.2⊘ 5.1 - 10.4⊘ 1.0.0 - 1.4.0⚠ 11.5.0 - 12.1.2⊘ 9.7 - 11.1⊘ 2.0⊘ 2.0
  1. Some functions conform (by “coincidence”)
  2. Some minor omissions