Reynold Xin created SPARK-8770:
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Summary: BinaryOperator expression
Key: SPARK-8770
URL: https://issues.apache.org/jira/browse/SPARK-8770
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Reynold Xin
Assignee: Reynold Xin
Our current BinaryExpression abstract class is not for generic binary
expressions, i.e. it requires left/right children to have the same type.
However, due to its name, contributors build new binary expressions that don't
have that assumption (e.g. Sha) and still extend BinaryExpression.
We should create a new BinaryOperator abstract class with this assumption, and
update the analyzer to only apply type casting rule there.
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