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https://issues.apache.org/jira/browse/DRILL-2060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Altekruse updated DRILL-2060:
-----------------------------------
Attachment: DRILL-2060.patch
> Support constant folding in expressions in Filter
> -------------------------------------------------
>
> Key: DRILL-2060
> URL: https://issues.apache.org/jira/browse/DRILL-2060
> Project: Apache Drill
> Issue Type: New Feature
> Components: Execution - Flow, Query Planning & Optimization
> Reporter: Aditya Kishore
> Assignee: Jacques Nadeau
> Fix For: 0.8.0
>
> Attachments: DRILL-2060.patch
>
>
> If one side of a filter condition is a constant expression, we should be able
> to evaluate the expression in the planning phase and replace the expression
> with the constant value.
> For example, the following filter
> {{Where shipdate < date '1997-01-01' + interval '1' year}}
> can be re-written as
> {{Where shipdate < date '1998-01-01'}}
> Or
> {{Where age + 5 < 42}}
> can be re-written as
> {{Where age < 37}}
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