Davies Liu created SPARK-12385:
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Summary: Push projection into Join
Key: SPARK-12385
URL: https://issues.apache.org/jira/browse/SPARK-12385
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Davies Liu
We usually have Join followed by a projection to pruning some columns, but
Join already have a result projection to produce UnsafeRow, we should combine
them together.
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