Andres Freund <andres@anarazel.de> writes:
> On 2020-06-30 19:49:04 +0200, Peter Eisentraut wrote:
>> The function body is parsed at function definition time and stored as
>> expression nodes in probin. So at run time, no further parsing is
>> required.
> Isn't a consequence of that that we'd get a lot more errors if any DDL
> is done to tables involved in the query? In contrast to other languages
> we'd not be able to handle column type changes etc, right?
I suppose it'd act like column references in a view, ie the dependency
mechanisms would forbid you from changing/dropping any column mentioned
in one of these functions.
regards, tom lane