postgres_update_deep_json, PostgreSQL

Language: Layout:

drop table mytable;
CREATE TABLE mytable (
   id int NOT NULL,
   info jsonb NOT NULL
);
insert into mytable values(1, '{
    "Id": "64848e27-c25d-4f15-99db-b476d868b575",
    "Associations_": [
        "RatingBlockPinDatum"
    ],
    "RatingScenarioId": "00572f95-9b81-4f7e-a359-3df06b093d4d",
    "RatingBlockPinDatum": [
        {
            "Name": "mappedmean",
            "PinId": "I.Assessment",
            "Value": "24.388",
            "BlockId": "Score"
        },
        {
            "Name": "realmean",
            "PinId": "I.Assessment",
            "Value": "44.502",
            "BlockId": "Score"
        }]}'),
(2, '{
    "Id": "64848e27-c25d-4f15-99db-b476d868b575",
    "Associations_": [
        "RatingBlockPinDatum"
    ],
    "RatingScenarioId": "00572f95-9b81-4f7e-a359-3df06b093d4d",
    "RatingBlockPinDatum": [
        {
            "Name": "xxxxx",
            "PinId": "I.Assessment",
            "Value": "24.388",
            "BlockId": "Score"
        },
        {
            "Name": "mappedmean",
            "PinId": "I.Assessment",
            "Value": "44.502",
            "BlockId": "Score"
        },
        {
            "Name": "ohoho",
            "PinId": "I.Assessment",
            "Value": "44.502",
            "BlockId": "Score"
        }]}');
        
with cte as (
    select id, generate_series(0, jsonb_array_length(info->'RatingBlockPinDatum')-1) i
    from   mytable
)
update mytable
   set info = jsonb_set(mytable.info, 
                 array['RatingBlockPinDatum', cte.i::varchar, 'Value'], 
                 '"99.999"'::jsonb)
from   cte
where  mytable.info->'RatingBlockPinDatum'->cte.i->>'Name' = 'mappedmean'
and    cte.id = mytable.id;

select * from mytable;

drop table mytable;


absolute service time: 0,41 sec