Re: Delete values from JSON

> Am 17.03.2023 um 08:56 schrieb Andreas Joseph Krogh <andreas(at)visena(dot)com>:
>
> Hi, in PG-14, how do I delete the keys "dunsNumber": "NaN":
>
> {
> "sessionId": "ce6fc9d0-5923-4d71-9f7e-ae60f35c45d6",
> "details": [
> {
> "keyInformation": {
> "dunsNumber": "NaN",
> "organizationType": "LIMITED_COMPANY"
> }
> },
> {
> "keyInformation": {
> "dunsNumber": "123",
> "organizationType": "LIMITED_COMPANY"
> }
> }
> ],
> "nisse": 123
> }
>
> So that the result becomes:
>
> {
> "sessionId": "ce6fc9d0-5923-4d71-9f7e-ae60f35c45d6",
> "details": [
> {
> "keyInformation": {
> "organizationType": "LIMITED_COMPANY"
> }
> },
> {
> "keyInformation": {
> "dunsNumber": "123",
> "organizationType": "LIMITED_COMPANY"
> }
> }
> ],
> "nisse": 123
> }
>
> Thanks.

Hi Andreas, this works for me.

➤ 2023-03-18 14:23:51 CET bz(at)[local]:5432/test
=# WITH data(j)
AS (VALUES (CAST('{ "sessionId": "ce6fc9d0-5923-4d71-9f7e-ae60f35c45d6", "details": [ { "keyInformation": { "dunsNumber": "NaN", "organizationType": "LIMITED_COMPANY" } }, { "keyInformation": { "dunsNumber": "123", "organizationType": "LIMITED_COMPANY" } } ], "nisse": 123 }' AS jsonb)))

SELECT jsonb_pretty(jsonb_set(j
, '{details}'
, (SELECT jsonb_agg(CASE
WHEN ((elem -> 'keyInformation') ->> 'dunsNumber') = 'NaN'
THEN jsonb_set(elem
, '{keyInformation}'
, (elem -> 'keyInformation') - 'dunsNumber')
ELSE elem
END)
FROM jsonb_array_elements(data.j -> 'details') AS elem))) AS nice_output
FROM data
;
nice_output
{
"nisse": 123,
"details": [
{
"keyInformation": {
"organizationType": "LIMITED_COMPANY"
}
},
{
"keyInformation": {
"dunsNumber": "123",
"organizationType": "LIMITED_COMPANY"
}
}
],
"sessionId": "ce6fc9d0-5923-4d71-9f7e-ae60f35c45d6"
}
(1 row)
Time: 0,731 ms

--
Boris