如何从 SQL Bigquery 中的所有键中提取所有 JSON 值？

Question

I have a json string in bigquery that looks like that:

{"1":"eggs","2":"nuts","3":"fish"}

How could I extract all values without listing the keys? What I need is:

['eggs', 'nuts', 'fish']

I've tried [json_extract(json_string, '$[1]'), json_extract(json_string, '$[2]')] and it does the job but it won't work if the number of keys increases

Answer 1

I managed to do this using this query:

CREATE TEMP FUNCTION jsonObjectValues(input STRING)
RETURNS Array<String>
LANGUAGE js AS """
  RETURN Object.values(JSON.parse(input));
""";

SELECT
  jsonObjectValues(value) AS values
FROM my_dataset