Proposition for autoname columns

Hello Pgsql-hackers,

When selecting data from json column it named as '?column?'
tucha=# select info->>'suma', docn from document order by id desc limit 5;
?column? | docn
----------+------
665.97 | 695
513.51 | 632
665.97 | 4804
492.12 | 4315
332.98 | 1302
(5 rows)

It would be useful if the name of column will be autoassigned based on
name of json key. Like at next query:

tucha=# select info->>'suma' as suma, docn from document order by id desc limit 5;
suma | docn
--------+------
665.97 | 695
513.51 | 632
665.97 | 4804
492.12 | 4315
332.98 | 1302
(5 rows)

Would it be useful this auto assigned name for column from json?

--
Best regards,
Eugen Konkov