true
,
false
outside of
is
BigQuery
Db2 (LUW)
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2005
2007
2009
2011
2013
2015
2017
2019
2021
✓ 3.23.1 - 3.43.0
a
⊘ 3.5.7 - 3.22.0
⊘ 2008R2 - 2022
✓ 8.3 - 16
a
⊘ 11gR1 - 21c
✓ 5.0 - 8.0.34
a
✓ 5.1 - 10.11
a
✓ 11.5.0 - 11.5.8
a
⊘ 9.7 - 11.1
✓ 2.0
a
Only
true
and
false
, not
unknown