is [not] true|false|unknown
BigQuery
Db2 (LUW)
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2005
2007
2009
2011
2013
2015
2017
2019
2021
2023
⚠ 3.5.7 - 3.50.0
a
⊘ 2008R2 - 2022
✓ 8.3 - 18
⚠ 23.4 - 23.26.0
a
⊘ 11gR1 - 23.0
✓ 5.0 - 9.5.0
✓ 5.1 - 12.0.2
⚠ 11.5.0 - 12.1.2
a
⊘ 9.7 - 11.1
✓ 2.0
a
⚠ 2.0
a
Kein
is [not] unknown
. Verwende stattdessen
is [not] null