Chris Dennis created CALCITE-6680:
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Summary: RexImpTable erroneously declares NullPolicy.NONE for
IS_EMPTY
Key: CALCITE-6680
URL: https://issues.apache.org/jira/browse/CALCITE-6680
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Chris Dennis
Attachments: is-empty-nullable.patch
RexImpTable implements {{IS EMPTY}} and {{IS NOT EMPTY}} using
{{Collections.isEmpty()}} but declares them as {{NullPolicy.NONE}}. This causes
nullable array and map columns to throw NPE at execution time when hitting null
values. I strongly suspect that other collection operators are similarly
misclassified and would run in to issues is used against nullable types.
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