Re: postgres json: How to query map keys to get children

SELECT  json_array_elements(skill_type.Skill->'value')->>'Name' as Name

FROM (

SELECT to_json(json_each(ResourceDocument->'Skill')) as Skill

FROM testdepot.Resource

) skill_type

to_json returns a key value map which you then use to get to the json array

Thanks for the lead :)

> Date: Sat, 23 Aug 2014 13:18:52 -0700
> From: david.g.johnston@gmail.com
> To: pgsql-sql@postgresql.org
> Subject: Re: [SQL] postgres json: How to query map keys to get children
>
> Hector Menchaca wrote
> > json_array_elements(ResourceDocument->'Skill'->*)
>
> NOT TESTED (or complete)
>
> SELECT skill_type.value->'Name'
> FROM (
> SELECT * FROM json_each(rd->'Skill')
> ) skill_type
>
> Because you want columns for Name, etc, you must list those explicitly
> instead of using json_each over those.
>
> David J.
>
>
>
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