On Tuesday, August 28, 2018, PG Doc comments form <noreply(at)postgresql(dot)org>
wrote:
>
> postgres=# DECLARE
> postgres-# key integer;
> ERROR: syntax error at or near "integer"
> LINE 2: key integer;
> ^
>
You are writing pl/psql language code at the SQL input prompt. That won't
work. You have to either use the SQL DO command or write a function.
David J.