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  1. Calcite
  2. CALCITE-4085

Improve nullability support for fields of structured type

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.24.0
    • Component/s: core

      Description

      As discussed in https://lists.apache.org/thread.html/r602ac95fff23dd1ef974fb396df7be061ab861384ec42f5c57ce0bc2%40%3Cdev.calcite.apache.org%3E I would like to change the way a type of a field of a record is derived at couple of locations. This helps frameworks such as Apache Flink to build support for nullable records with not null fields.

      I suggest to change:

      • SqlDotOperator#deriveType
      • SqlItemOperator#inferReturnType
      • AliasNamespace#validateImpl
      • RexBuilder#makeFieldAccessInternal
      • SqlValidatorImpl.DeriveTypeVisitor#visit(SqlIdentifier)

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              • Assignee:
                dwysakowicz Dawid Wysakowicz
                Reporter:
                dwysakowicz Dawid Wysakowicz
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