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Hello,
Thank You for your question.
I have reached out to the Redshift service team and they have not indicated any recent change to this functions; parameters or functionality.
The function is expecting a 'json_string' and a super column is provided, you may use the json_serialize function to prepare your super column data for use with any of the json function expecting a 'json_string' as an input parameter. https://docs.aws.amazon.com/redshift/latest/dg/JSON_SERIALIZE.html
for example: json_extract_path_text(json_serialize(super_column), 'path_elem' )
If you have any further questions I would invite you to open a support case to further investigate and escalate if required.
Thank You and have a great day.
已回答 2 年前
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