Re: JSON/SQL: jsonpath: incomprehensible error message

On Wed, Jun 29, 2022 at 4:28 PM Erik Rijkers <er(at)xs4all(dot)nl> wrote:
> Op 29-06-2022 om 15:00 schreef Amit Kapila:
> > On Mon, Jun 27, 2022 at 8:46 PM Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
> >>
> >> On 2022-06-26 Su 11:44, Erik Rijkers wrote:
> >>> JSON/SQL jsonpath
> >>>
> >>> For example, a jsonpath string with deliberate typo 'like_regexp'
> >>> (instead of 'like_regex'):
> >>>
> >>> select js
> >>> from (values (jsonb '{}')) as f(js)
> >>> where js @? '$ ? (@ like_regexp "^xxx")';
> >>>
> >>> ERROR: syntax error, unexpected IDENT_P at or near " " of jsonpath input
> >>> LINE 1: ...s from (values (jsonb '{}')) as f(js) where js @? '$ ? (@
> >>> li...
> >>>
> >>> Both 'IDENT_P' and 'at or near " "' seem pretty useless.
> >>>
>
> > removing this. One thing that is not clear to me is why OP sees an
> > acceptable message (ERROR: syntax error, unexpected invalid token at
> > or near "=" of jsonpath input) for a similar query in 14?
>
> To mention that was perhaps unwise of me because The IDENT_P (or more
> generally, *_P) messages can be provoked on 14 too. I just thought
> 'invalid token' might be a better message because 'token' gives a more
> direct association with 'errors during parsing' which I assume is the
> case here.
>
> IDENT_P or ANY_P convey exactly nothing.

+1

------
Regards,
Alexander Korotkov