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https://issues.apache.org/jira/browse/BEAM-4449?focusedWorklogId=109094&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-109094
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ASF GitHub Bot logged work on BEAM-4449:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Jun/18 14:54
            Start Date: 05/Jun/18 14:54
    Worklog Time Spent: 10m 
      Work Description: kennknowles commented on a change in pull request 
#5544: [BEAM-4449] Replace project and filter with calc
URL: https://github.com/apache/beam/pull/5544#discussion_r193102562
 
 

 ##########
 File path: 
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/interpreter/BeamSqlExpressionExecutor.java
 ##########
 @@ -34,7 +34,10 @@
 
   /** apply transformation to input record {@link Row} with {@link 
BoundedWindow}. */
   List<Object> execute(
-      Row inputRow, BoundedWindow window, ImmutableMap<Integer, Object> 
correlateEnv);
+      Row inputRow,
+      BoundedWindow window,
+      ImmutableMap<Integer, Object> correlateEnv,
+      ImmutableMap<Integer, Object> localRefEnv);
 
 Review comment:
   Done. The classic name for it is "environment" so that's what I called it. 
It means the same as "context" but we use context so much anyhow.

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 109094)
    Time Spent: 1h 40m  (was: 1.5h)

> Use Calc instead of Project and Filter separately
> -------------------------------------------------
>
>                 Key: BEAM-4449
>                 URL: https://issues.apache.org/jira/browse/BEAM-4449
>             Project: Beam
>          Issue Type: Improvement
>          Components: dsl-sql
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>            Priority: Major
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Calcite has a combined Calc operator that is amenable to more optimization, 
> and also means less code to manage as we adjust how the operators/expressions 
> are implemented.



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