Reynold Xin created SPARK-9546:
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Summary: Centralize orderable data type checking
Key: SPARK-9546
URL: https://issues.apache.org/jira/browse/SPARK-9546
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Reynold Xin
Assignee: Reynold Xin
We have a lot of places that check whether we could perform ordering for some
expressions based on the data type. We should centralize the checking into one
place.
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