Vladimir Sitnikov created CALCITE-477:
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Summary: Add example of "better pushdown via RexShuttle API" to
CSV adapter
Key: CALCITE-477
URL: https://issues.apache.org/jira/browse/CALCITE-477
Project: Calcite
Issue Type: Bug
Affects Versions: 1.0.0-incubating
Reporter: Vladimir Sitnikov
Assignee: Julian Hyde
In https://groups.google.com/forum/#!topic/optiq-dev/MrTKe0e8vuQ Bruno
suggested roll-your-own {{RexShuttle}} way to identify the required inputs.
The advantage of the approach is it can see through calculations and identify
the required columns.
I think it makes sense to include an example of
{{InputFinder}}+{{RexInputConverter}} that will show how inputs can be
identified out of complex expressions.
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