Syntax "date AT TIME ZONE timezone" not implemented (SQL Server / PostgreSQL)

[ocus]

On https://sqlfum.pt/,

SELECT d1 AT TIME ZONE 'Europe/Paris' FROM t1

produces error message :

unimplemented at or near "from"

date AT TIME ZONE timezone is a somehow classic construct.

References :

• SQL Server 2016+
• PostgreSQL 7.3+