Rumpi Gravenstein <rgravens(at)gmail(dot)com> writes:
> Our databases are deployed with automation tools. They should all be
> created the same. They all have the same 17 extensions. I've asked a DBA
> to confirm.
Well, there's got to be *something* different about that database.
> This issue only appears in the function I have listed. A similar function,
> same contents and parameter but with a different name, works the way I
> would expect.
That sure seems like evidence in favor of the similarly-named-function
idea. But I don't see how the DROP FUNCTION wouldn't have failed if
there were two, nor why we wouldn't see it in \df.
regards, tom lane