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https://issues.apache.org/jira/browse/CALCITE-6285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17822343#comment-17822343
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EveyWu commented on CALCITE-6285:
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I think the Spark version update causes the problem, -1 for which the function
inserts a new element after the current last element.
The original definition [3.4.0,
|https://spark.apache.org/docs/3.4.0/api/sql/index.html#array_insert]Updated
version definition
[3.4.2|https://spark.apache.org/docs/3.4.2/api/sql/index.html#array_insert]
> 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
> Priority: Minor
>
> 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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