Hi, Yuval.
`SupportsReadingMetadata` make connectors be able to append metadata
columns to the schema of table sources. But one operator does not know the
columns map to which column in the source.
We could try to generate this information when parsing Flink sql. But it is
hard for DataStream API
Hi,
I am looking for a way to propagate a column all the way from the source to
the sink, without the knowledge of whoever is applying transformations on
the tables.
I looked into SupportsReadingMetadata, and saw that it is able to "tag"
tables with metadata. I was wondering, does this tag flow be
