Re: How to select values in a JSON type of column?

{
   "targets": [
     {
       "audienceSegments": [
         {
           "includes": [
             {
               "consumer": "selection",
               "segments": {
                 "allOf": [
                   {
                     "provider": "a",
                     "ids": [
                       {
                         "id": "110418"
                       },
                       {
                         "id": "110430"
                       },
                       {
                         "id": "110433"
                       }
                     ]
                   }
                 ]
               }
             }
           ],
           "excludes": [
             {
               "consumer": "selection",
               "segments": {
                 "allOf": [
                   {
                     "provider": "a",
                     "ids": [
                       {
                         "id": "109776"
                       }
                     ]
                   }
                 ]
               }
             }
           ]
         }
       ]
     }
   ]
 }

I actually have version 9.3.17 😬

On Wed, 18 Nov 2020 at 15:55, Thomas Kellerer <shammat@gmx.net> wrote:

Snjezana Frketic schrieb am 18.11.2020 um 11:29:
> I have a column called |targeting| in a table called |campaigns| .
> [...]
> and I need to select all the |ids| in |includes|.
> Currently, I am doing it like this 
>
> SELECT |targeting#>'{targets,0,audienceSegments,0,includes,0,segments,allOf,0,ids}'FROM campaigns;|  
>

If you are on Postgres 12 or later, this can be done using jsonb_path_query_array:

  select jsonb_path_query_array(targeting, '$.targets[*].*.includes.**.ids.id')
  from campaigns


Online example: https://dbfiddle.uk/?rdbms=postgres_12&fiddle=ee7f6e73055ffb3a98fcfd3d86763e35

Thomas

On Wed, Nov 18, 2020 at 9:23 AM Snjezana Frketic <frketic.snjezana@gmail.com> wrote:

Unfortunately, I also can not update my version :) 

Then probably the answer to your original question is no :)

There are possibly other ways to make something that works but if you aren't willing to upgrade off of a discontinued version, onto one which has a perfectly usable solution, then my interest in pondering a work-around is near zero.

David J.

Snjezana Frketic schrieb am 18.11.2020 um 11:29:
> I have a column called |targeting| in a table called |campaigns| .
> [...]
> and I need to select all the |ids| in |includes|.
> Currently, I am doing it like this 
>
> SELECT |targeting#>'{targets,0,audienceSegments,0,includes,0,segments,allOf,0,ids}'FROM campaigns;|  
>

If you are on Postgres 12 or later, this can be done using jsonb_path_query_array:

  select jsonb_path_query_array(targeting, '$.targets[*].*.includes.**.ids.id')
  from campaigns


Online example: https://dbfiddle.uk/?rdbms=postgres_12&fiddle=ee7f6e73055ffb3a98fcfd3d86763e35

Thomas

On Wednesday, November 18, 2020, Snjezana Frketic <frketic.snjezana@gmail.com> wrote:

SELECT targeting#>'{targets,0,audienceSegments,0,includes,0,segments,allOf,0,ids}'FROM campaigns;  

and that works, but, I don’t want to have a fixed path because positions could change like 0 could become 1, includes and excludes could change positions, allOf  could be anyOf etc.
Any idea of how to always select ids in includes no matter the changes?

  Maybe it can be done using json path:

 https://www.postgresql.org/docs/13/functions-json.html#FUNCTIONS-SQLJSON-PATH

David J.