Re: Typo in DATATYPE-JSONPATH

> On 2021.04.15. 22:04 PG Doc comments form <noreply(at)postgresql(dot)org> wrote:
>
> Page: https://www.postgresql.org/docs/13/datatype-json.html
> Description:
>
> Hello,
>
> On the DATATYPE-JSONPATH page:
> https://www.postgresql.org/docs/13/datatype-json.html#DATATYPE-JSONPATH
>
> There is a line that shows that GIN indexes support `@@` and `(at)?` operators
> for json matching, then there are two examples trying to show both
> operators. However both examples use the `@@` operator.
>
> Examples from the doc:
>
> SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @@ '$.tags[*] ==
> "qui"';
> SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @@ '$.tags[*] ? (@ ==
> "qui")';
>
> I think the second example should be using the `(at)?` operator so that both
> sample queries do the same thing but with the different operator types. So
> the second example should read:
>
> SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @? '$.tags[*] ? (@ ==
> "qui")';
>
> Thank you,
> Ben

FWIW, I agree with this and already sent a doc-patch [1], which is be applied from 12, 13, and master.

Erik

[1] https://www.postgresql.org/message-id/1219476687.20432.1617452918468@webmailclassic.xs4all.nl