Hive
  1. Hive
  2. HIVE-1955

Support non-constant expressions for array indexes.

    Details

    • Type: Improvement Improvement
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      FAILED: Error in semantic analysis: line 4:8 Non Constant Expressions for Array Indexes not Supported dut

      ...just wrote my own UDF to do this, and it is trivial. We should support this natively.

      Let foo have these rows:
      arr i
      [1,2,3] 1
      [3,4,5] 2
      [5,4,3] 2
      [0,0,1] 0

      Then,
      SELECT arr[i] FROM foo
      should return:
      2
      5
      3
      1

      Similarly, for the same table,
      SELECT 3 IN arr FROM foo
      should return:
      true
      true
      true
      false

      ...these use cases are needless limitations of functionality. We shouldn't need UDFs to accomplish these goals.

        Activity

        Hide
        Adam Kramer added a comment -

        Also, IN should operate on non-constant arrays.

        Show
        Adam Kramer added a comment - Also, IN should operate on non-constant arrays.
        Hide
        Navis added a comment -

        Is there any reason index value should be constant?

        Show
        Navis added a comment - Is there any reason index value should be constant?

          People

          • Assignee:
            Unassigned
            Reporter:
            Adam Kramer
          • Votes:
            2 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

            • Created:
              Updated:

              Development