Takeshi Yamamuro created SPARK-20730:
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Summary: Add a new Optimizer rule to combine nested Concats
Key: SPARK-20730
URL: https://issues.apache.org/jira/browse/SPARK-20730
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.1.1
Reporter: Takeshi Yamamuro
The master supports a pipeline operator '||' to concatenate strings. Since the
parser generates nested Concat expressions, the optimizer needs to combine the
nested expressions.
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