Dean Gurvitz created SPARK-21719:
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Summary: Enable complex expression in Column.getItem(...)
Key: SPARK-21719
URL: https://issues.apache.org/jira/browse/SPARK-21719
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 2.2.0
Reporter: Dean Gurvitz
Currently, the Column.getItem(...) method supports only String or number
literals. However, one might want to provide a more complicated expression,
such as get the item at the index specified by another column, or the item at
an index which is specified by a UDF call. Currently, there is no way to do
that.
Creating an overload for the getItem(...) method which accepts a Column object
can be one solution.
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