Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/6332
Thanks for the review @pnowojski. I agree that we should support `flink-cli
< query01.sql` or `echo "INSERT INTO bar SELECT * FROM foo" | flink-cli`.
However, I would move this to a separate issue because I'm not sure how well we
support multilines and EOF right now. With the `-u` flag the user also gets the
correct error code after the submission, with `flink-cli < query01.sql` the CLI
would either stay in interactive mode or always return success. I would keep
the `-u` flag for now for testing purposes. We could remove it from the CLI
help and leave it as an internal parameter for now. What do you think?
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