Timo Walther created FLINK-33028:
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Summary: FLIP-348: Make expanding behavior of virtual metadata
columns configurable
Key: FLINK-33028
URL: https://issues.apache.org/jira/browse/FLINK-33028
Project: Flink
Issue Type: New Feature
Components: Table SQL / API, Table SQL / Planner
Reporter: Timo Walther
Assignee: Timo Walther
Many SQL vendors expose additional metadata via so-called "pseudo columns" or
"system columns" next to the physical columns.
However, those columns should not be selected by default when expanding SELECT
*. Also for the sake of backward compatibility. Flink SQL already offers
pseudo columns next to the physical columns exposed as metadata columns.
This proposal suggests to evolve the existing column design slightly to be more
useful for platform providers.
https://cwiki.apache.org/confluence/x/_o6zDw
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