You can wrap result value into another language src block like this:

#+begin_src ruby :results code :wrap src shell
puts "echo 'hello'"
#+end_src

#+RESULTS:
#+begin_src shell
echo 'hello'
#+end_src

Same for JSON by changed `:wrap src shell` into `wrap json`. But you 
need the value is JSON.

Isaw you mentioned want ob-sql support JSON return type. I guess it need 
to be implemented in ob-sql.Or you can use `:post` to convert result to 
JSON. Or use `advice-add` to add a function to convert result to JSON.


On 03/29/2018 06:30 AM, John Kitchin wrote:
> 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 
> <mailto: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 <mailto: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 <tel:%28412%29%20268-7803>
>         @johnkitchin
>         http://kitchingroup.cheme.cmu.edu
>         <http://kitchingroup.cheme.cmu.edu>
>
>
>         On Wed, Mar 28, 2018 at 1:42 PM, Ag Ibragimov
>         <agzam.ibragimov@gmail.com <mailto: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
>             <https://orgmode.org/manual/results.html#results>
>
>             Thank you.
>
>
>