Github user gatorsmile commented on the pull request:
https://github.com/apache/spark/pull/10678#issuecomment-170942852
Like the example I posted above, it works in RDBMS. However, supporting it
in Spark SQL is not trivial. In this example, `Join` operator is involved but
it does not have a `projectList` attribute. Thus, we are unable to directly add
missing attributes to it. Now, only two operators `Project` and `Window` are
doable. That means, we might see more JIRAs to complain it.
In the long term, maybe we can add `projectList` to all the logical
operators? That indicates we integrate `Project` into all the logical
operators.
I will check if the three TPCDS queries can be resolved without major code
changes. Thanks!
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