On Fri, Jan 15, 2016 at 7:43 AM, Glyn Astill <glynast...@yahoo.co.uk> wrote:
> Hi all,
> I was just looking through the new jsonb operators in the 9.5 release, and 
> was wondering if there's any future intention to add a delete operator that 
> removes element/pair matches?  I.e. some sort of top-level "jsonb - jsonb" 
> operator, e.g.
> # select '{"a":1, "b":2}'::jsonb - '{"b":2, "a":4}'::jsonb;
> ?column?
> ----------
> {"a": 1}
> (1 row)
> Or would this behaviour be classed as incorrect in some way?

It makes sense for simple json objects in your contrived example.

How would you define complex structures?  What happens when the key
matches but not the value?


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