On 2021-May-12, Bruce Momjian wrote:
> OK, I added it into the existing entry:
>
> <listitem>
> <!--
> Author: Alexander Korotkov <akorot...@postgresql.org>
> 2021-01-31 [676887a3b] Implementation of subscripting for jsonb
> Author: Alexander Korotkov <akorot...@postgresql.org>
> 2021-01-31 [81fcc72e6] Filling array gaps during jsonb subscripting
> Author: Alexander Korotkov <akorot...@postgresql.org>
> 2021-01-31 [aa6e46daf] Throw error when assigning jsonb scalar instead
> of a com
> -->
>
> <para>
> Allow subscripting of jsonb (Dmitry Dolgov)
> </para>
>
> <para>
> Subscripting can be used to extract from and assign to jsonb documents.
> Subscripting is now extensible so extensions and built-in data type can
> make use of this.
> </para>
> </listitem>
I dunno, this seems to approach the feature from the specifics rather
than its full generality. I would have said something like
Make subscripting user-extensible for "container" types
<!-- maybe "array-like types" -->
Subscripting JSONB is now integrated in core, and adding user-defined
subscripting for other types is possible.
--
Álvaro Herrera Valdivia, Chile
Bob [Floyd] used to say that he was planning to get a Ph.D. by the "green
stamp method," namely by saving envelopes addressed to him as 'Dr. Floyd'.
After collecting 500 such letters, he mused, a university somewhere in
Arizona would probably grant him a degree. (Don Knuth)
