If you can get ob-sql to output data in tabular form (if it is not nested)
you can do something like this:

#+name: tabular
#+BEGIN_SRC python :results value
d = [['type', 'test'], ['format', 'json']]
return d
#+END_SRC

#+RESULTS: tabular
| type   | test |
| format | json |

#+BEGIN_SRC emacs-lisp :var data=tabular :wrap json
(json-encode data)
#+END_SRC

#+RESULTS:
#+BEGIN_json
{"type":["test"],"format":["json"]}
#+END_json

If the data is nested, then you can see if there is a way to output a lisp
readable string:

#+name: my-data
#+BEGIN_SRC python :results output
print('((type . test) (format . json))')
#+END_SRC

#+RESULTS: my-data
: ((type . test) (format . json))



#+BEGIN_SRC emacs-lisp :var data=my-data :wrap json
(json-encode (read data))
#+END_SRC

#+RESULTS:
#+BEGIN_json
{"type":"test","format":"json"}
#+END_json



John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Wed, Mar 28, 2018 at 2:19 PM, <agzam.ibragimov@gmail.com> wrote:

> Hmm, it works for emacs-lisp, however I specifically wanted to use it with
> ob-sql, and can't find a way.
>
> On Wed, Mar 28, 2018 at 2:05 PM John Kitchin <jkitchin@andrew.cmu.edu>
> wrote:
>
>> Does this do what you want:
>>
>> #+BEGIN_SRC emacs-lisp :wrap json
>> (json-encode '((type . "text")))
>> #+END_SRC
>>
>> #+RESULTS:
>> #+BEGIN_json
>> {"type":"text"}
>> #+END_json
>>
>> John
>>
>> -----------------------------------
>> Professor John Kitchin
>> Doherty Hall A207F
>> Department of Chemical Engineering
>> Carnegie Mellon University
>> Pittsburgh, PA 15213
>> 412-268-7803 <(412)%20268-7803>
>> @johnkitchin
>> http://kitchingroup.cheme.cmu.edu
>>
>>
>> On Wed, Mar 28, 2018 at 1:42 PM, Ag Ibragimov <agzam.ibragimov@gmail.com>
>> wrote:
>>
>>>
>>> Sorry, I don't know the best medium to convey ideas and I'm afraid not
>>> qualified (familiar with org-mode codebase) to submit a PR for this.
>>> I wonder how difficult would be to
>>> add the possibility to have babel src block results to be rendered as
>>> json?
>>> Basically a new result type https://orgmode.org/manual/
>>> results.html#results
>>>
>>> Thank you.
>>>
>>>
>>