Mihai Budiu created CALCITE-6285:
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             Summary: Function ARRAY_INSERT produces an incorrect result for 
negative indices
                 Key: CALCITE-6285
                 URL: https://issues.apache.org/jira/browse/CALCITE-6285
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.36.0
            Reporter: Mihai Budiu


Here is a test taken from the Spark documentation page: 
https://spark.apache.org/docs/latest/api/sql/index.html#array_insert

{code}
SELECT array_insert(array(5, 3, 2, 1), -4, 4);
[5,4,3,2,1]
{code}

The result produced by Calcite is:

[4,5,3,2,1]

The strange thing is that there are tests for negative indices. I wonder if the 
original tests are wrong, or the behavior of this function in Spark was changed 
since the tests were written.




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