Hi, While I was working on a patch that eliminates trivial projections (the ones that just rename input columns) I learned that I do not get what is Project.Flags==NONE/BOXED/ANON_FIELDS. The pull request is here: https://github.com/apache/incubator-calcite/pull/32, however I am not sure if it breaks something out of scope of the current test suite.
Is this Flags something that is worth supporting? I was not be able to find tests that use non-BOXED Project. -- Regards, Vladimir Sitnikov
