Jason Altekruse created DRILL-3899:
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Summary: SplitUpComplexExpressions rule should be enhanced to
avoid planning unnecessary copies of data
Key: DRILL-3899
URL: https://issues.apache.org/jira/browse/DRILL-3899
Project: Apache Drill
Issue Type: Bug
Reporter: Jason Altekruse
A small enhancement was made as part of DRILL-3876 to remove an unnecessary
copy in a simple flatten case. This was easy to implement, but did not cover
all of the possible cases where the rewrite rule is currently planning
inefficient operations. This issue is tracking the more complete fix to handle
all of the more complex cases optimally.
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