… as (…) persistent
BigQuery
Db2 (LUW)
DuckDB
H2
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2009
2011
2013
2015
2017
2019
2021
2023
2025
⊘ 3.31.0 - 3.51.0
⊘ 2008R2 - 2025
⊘ 12 - 18
⊘ 11gR1 - 23.26.0
⊘ 5.7 - 9.5.0
✓ 5.2 - 12.1.2
⊘ 1.4.191 - 2.4.240
⊘ 1.0.0 - 1.4.0
⚠ 9.7 - 12.1.2
a
Accepted in a few cases, but suspected to be a parser oddity — use with caution!