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https://issues.apache.org/jira/browse/LENS-603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14594001#comment-14594001
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Hudson commented on LENS-603:
-----------------------------
SUCCESS: Integrated in Lens-Commit #827 (See
[https://builds.apache.org/job/Lens-Commit/827/])
LENS-603: Skip expression rewrite in columnar rewriter (rajatgupta59: rev
6d5f955fbdb904790506fcb1c8fa5fbe4458aa05)
*
lens-driver-jdbc/src/main/java/org/apache/lens/driver/jdbc/ColumnarSQLRewriter.java
*
lens-driver-jdbc/src/test/java/org/apache/lens/driver/jdbc/TestColumnarSQLRewriter.java
> Skip expression rewrite in columnar rewriter
> --------------------------------------------
>
> Key: LENS-603
> URL: https://issues.apache.org/jira/browse/LENS-603
> Project: Apache Lens
> Issue Type: Bug
> Reporter: Sushil Mohanty
> Assignee: Sushil Mohanty
> Attachments: LENS-603-2.patch
>
>
> There are certain cases where expressions has conditions which needs to be
> applied for each resultant row. For eg. sum(case when city_dim.city_name =
> 'abc' then total_count when city_dim.city_name is null then 0 end) .
> Columnar rewriter is rewriting such expression as fact subquery and passing
> the result to main query. We should skip such rewrite and do it only once in
> the main query.
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