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Posted to issues@spark.apache.org by "Takeshi Yamamuro (JIRA)" <ji...@apache.org> on 2019/01/16 12:49:00 UTC

[jira] [Created] (SPARK-26637) Makes GetArrayItem nullability more precise

Takeshi Yamamuro created SPARK-26637:
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             Summary: Makes GetArrayItem nullability more precise
                 Key: SPARK-26637
                 URL: https://issues.apache.org/jira/browse/SPARK-26637
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.4.0
            Reporter: Takeshi Yamamuro


In master, GetArrayItem nullable is always true;
https://github.com/apache/spark/blob/cf133e611020ed178f90358464a1b88cdd9b7889/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeExtractors.scala#L236

But, If input array size is constant and ordinal is foldable, we could make GetArrayItem nullability more precise.



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