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  1. Apache Arrow
  2. ARROW-9653

[Rust][DataFusion] Multi-column Group by: Invalid Argument Error

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      Description

      Repro:

      CREATE EXTERNAL TABLE repro(a INT, b INT)
      STORED AS CSV
      WITH HEADER ROW
      LOCATION 'repro.csv';
      

      The contents of repro.csv are as follows (also attached):

      a,b
      1,100
      1,200
      2,100
      2,200
      2,300
      

      Then try to run the following query (to sum the values of a, grouped by b).

      select sum(a), a, b from repro group by a, b;
      

      Expected result: a table with three output columns: sum(a), a, and b

      Actual result: An arrow error

      
      > select sum(a), a, b from repro group by a, b;
      ArrowError(InvalidArgumentError("number of columns(4) must match number of fields(3) in schema"))
      
      

        Attachments

        1. repro.csv
          0.0 kB
          Andrew Lamb

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              • Assignee:
                alamb Andrew Lamb
                Reporter:
                alamb Andrew Lamb
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                  Updated:
                  Resolved:

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