Wennn commented on issue #23475: [SPARK-26552][SQL] Add a new function - regexp_to_map URL: https://github.com/apache/spark/pull/23475#issuecomment-451832739 I think this function does the similar thing like from_json, to extract a subquery table from a data structure. A common use is to parse log file and use group names defined by user, while the current functions like regexp_extract does not support group name yet. So maybe should I improve the function regexp_extract?
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