RE: Wildcarding json keys in json query

[Patrick FICHE]

I guess you could try something like this

SELECT * FROM ( SELECT * from json_each(( '{
                                              "ports" : {
                                                  "port_abc":{"min": 5, "max": 
7, "mean": 6},
                                                  "port_def":{"min": 5, "max": 
9, "mean": 7},
                                                  "port_ghi":{"min": 6, "max": 
10, "mean": 8}
                                                  }
                                              }'::json->'ports'
                                        ))
              ) T
WHERE (value::json->>'mean')::float >= 7;

From: David Gauthier <davegauthie...@gmail.com>
Sent: Tuesday, November 30, 2021 9:40 PM
To: Postgres General <pgsql-gene...@postgresql.org>
Subject: Wildcarding json keys in json query

PG 11.5 on linux

Let's say I store a jsonb in a column called test_results that looks like 
this...

{
ports : {
    port_abc:{min: 5, max: 7, mean: 6},
    port_def:{min: 5, max: 9, mean: 7},
    port_ghi:{min: 6, max: 10, mean: 8}
    }
}

And I want to to get all the port names where the mean is >= 7.

This works...

select 1 from mytbl where cast(test_results#>'{ports,port_abc,mean}' as float) 
>= 7 ;

But I want all the ports that have mean >= 7.
Something akin to...

select 1 from mytbl where cast(test_results#>'{ports,*,mean}' as float) >= 7 ;

But the "*" doesn't work :-(

Any ideas ?
Thanks!