BigQuery extract repeated JSON

Question

I have the following data in one column in BigQuery:

{"id": "81", "type": ["{'id2': '12', 'type2': 'main'}", "{'id2': '15', 'type2': 'sub'}"]}

I would like to parse this and have 'id2' and 'type2' as nested fields. I tried using JSON_VALUE_ARRAY(data, "$.type") that correctly creates the nested rows but couldn't process extracting 'id2' and 'type2'. I believe maybe the "s are the issue inside the list, how could I get past those?

UPDATE:

This is the format I would like to achieve.

Answer 1

Consider below approach

select 
  json_value(json, '$.id') id, array(
    select as struct json_value(trim(type, '"'), '$.id2') as id2, json_value(trim(type, '"'), '$.type2') as type2
    from unnest(json_extract_array(json, '$.type')) type
  ) type
from your_table