snowflake.snowpark.functions.check_json¶
- snowflake.snowpark.functions.check_json(col: Union[Column, str]) Column[source]¶
Checks the validity of a JSON document. If the input string is a valid JSON document or a NULL (i.e. no error would occur when parsing the input string), the function returns NULL. In case of a JSON parsing error, the function returns a string that contains the error message.
Example:
>>> df = session.create_dataframe(["{'ValidKey1': 'ValidValue1'}", "{'Malformed -- missing val':}", None], schema=['a']) >>> df.select(check_json(df.a)).show() ----------------------- |"CHECK_JSON(""A"")" | ----------------------- |NULL | |misplaced }, pos 29 | |NULL | -----------------------