Re: PGAdmin4 debugger - unable to call ltree functions

"Ian Bell" <ib(at)ianbellsoftware(dot)com> writes:
> I just tried your suggestion and it generates the same error. For
> verification, here is the function run in the debugger.

I just realized that "syntax error at position N" is *not* the exact
spelling you would get from a syntax error in PG's main parser, which
I think is what we were all assuming this'd trace down to somehow.

What it is is the (very poorly chosen) message you get if either
ltree_in() or lquery_in() doesn't like what it's been handed.
So basically, the problem here is that TestLtree() is being called
with a string that isn't a valid ltree representation. You haven't
shown us what you are doing on that end, but for example I can
duplicate the error message with

# select text2ltree(' ');
ERROR: syntax error at position 0

regards, tom lane