drexler-sky commented on code in PR #1923:
URL: https://github.com/apache/datafusion-comet/pull/1923#discussion_r2162673921
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spark/src/test/scala/org/apache/comet/CometArrayExpressionSuite.scala:
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@@ -232,24 +232,42 @@ class CometArrayExpressionSuite extends CometTestBase
with AdaptiveSparkPlanHelp
}
}
+ test("array_distinct") {
Review Comment:
Thanks for the comment. While I was testing the nulls, I found out that
datafusion's array_distinct doesn't behave the same as spark's array_distinct.
This is because datafusion first
[sorts](https://github.com/apache/datafusion/blob/main/datafusion/functions-nested/src/set_ops.rs#L541)
then removes duplicates while spark preserves the original order. Therefore I
changed the code to implement `IncompatExpr`.
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