Self-referencing
delete
BigQuery
Db2 (LUW)
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2007
2009
2011
2013
2015
2017
2019
2021
✓ 3.5.7+
a
✓ 2008R2+
a
✓ 8.3+
a
✓ 11gR1+
a
⊘ 5.0 - 8.0.33
✓ 10.3+
a
⊘ 5.1 - 10.2 10.2.14
✓ 9.7+
a
✓ 2.0+
a
Syntax accepted, functionality not tested thoroughly