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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2016/04/03 15:36:25 UTC

[jira] [Created] (SPARK-14354) Let Expand take name expressions and infer output attributes

Liang-Chi Hsieh created SPARK-14354:
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             Summary: Let Expand take name expressions and infer output attributes
                 Key: SPARK-14354
                 URL: https://issues.apache.org/jira/browse/SPARK-14354
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Liang-Chi Hsieh


Currently we create Expand operator by specifying projections (Seq[Seq[Expression]])  and its output. We allow Expand to reuse child operator's attributes and so make its contraints invalid. We should let it take name expressions and infer output itself.



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