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  1. Calcite
  2. CALCITE-4085

Improve nullability support for fields of structured type

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 1.24.0
    • 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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        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. CALCITE-2464 Allow to set nullability for columns of structured types

          • Major - Major loss of function.
          • Closed
          links to

          Web Link GitHub Pull Request #2042

          Web Link PR#2042

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              dwysakowicz Dawid Wysakowicz
              dwysakowicz Dawid Wysakowicz
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