extract(… from <interval>)
BigQuery
Db2 (LUW)
DuckDB
H2
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2007
2009
2011
2013
2015
2017
2019
2021
2023
2025
✓ 8.4 - 18
a
✓ 8.3
a
✓ 11gR1 - 23.26.0
⚠ 1.4.198 - 2.4.240
⚠ 1.0.0 - 1.4.0
⚠ 2.0
⊘ 2.0
Returns approximate numeric type