Three-valued logic
BigQuery
Db2 (LUW)
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2005
2007
2009
2011
2013
2015
2017
2019
2021
✓ 3.6.1 - 3.43.0
⚠ 3.5.7
✓ 2008R2 - 2022
✓ 8.4 - 16
⚠ 8.3
✓ 11gR1 - 21c
✓ 5.0 - 8.0.34
✓ 5.1 - 10.11
✓ 9.7 - 11.5.8
✓ 2.0