Json 未为当前项目启用

Question

I have an issue with the PARSE_JSON function in google big query when trying to convert a string formatted json into a json format.

SELECT PARSE_JSON(data) FROM table

Error received: "Json not enabled for current project"

Answer 1

Parsing JSON is already possible, if a single value is extraced from a JSON:

Select JSON_VALUE(PARSE_JSON(data).A)  FROM
(
Select '{"A":5,"B":12}' as data
)

For using PARSE_JSON and store the result in table field, you need to enroll in the preview (March 2022), apply here: https://cloud.google.com/bigquery/docs/reference/standard-sql/json-data