Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/1477#issuecomment-169987537
I added two small comments in-line.
But there is another thing that came to my mind. A `Table` can be
constructed from any type of `DataSet` not just a `DataSource`. So, it is
possible that the input of a query is a partial DataSet program. In that case,
the Explain output would include the DataSet program as well as the Table
query. I am not sure if that is actually desirable. Do you think it is possible
to limit the Explain output to the current query only? Or would you be in favor
of showing the whole plan?
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