Re: jsonpath

On Sun, Mar 10, 2019 at 1:51 PM Alexander Korotkov
<a.korotkov@postgrespro.ru> wrote:
> On Wed, Mar 6, 2019 at 12:40 AM Nikita Glukhov <n.gluhov@postgrespro.ru> wrote:
> > Attached 36th version of the patches.
>
> Thank yo for the revision!
>
> In the attached revision following changes are made:
>
> > "unknown" refers here to ordinary three-valued logical Unknown, which is
> > represented in SQL by NULL.
> >
> > JSON path expressions return sequences of SQL/JSON items, which are defined by
> > SQL/JSON data model.  But JSON path predicates (logical expressions), which are
> > used in filters, return three-valued logical values: False, True, or Unknown.
>
>  * I've added short explanation of this to the documentation.
>  * Removed no longer present data structures from typedefs.list of the
> first patch.
>  * Moved GIN support patch to number 3.  Seems to be well-isolated and
> not very complex patch.  I propose to consider this to 12 too.  I
> added high-level comment there, commit message and made some code
> beautification.

I think patches 1 and 2 are in committable shape (I reached Tomas
off-list, he doesn't have more notes regarding them).  While patch 3
requires more review.

I'm going to push 1 and 2 if no objections.

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company