realno commented on a change in pull request #1551:
URL: https://github.com/apache/arrow-datafusion/pull/1551#discussion_r782737912
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File path: datafusion/src/physical_plan/expressions/variance.rs
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@@ -605,6 +605,62 @@ mod tests {
Ok(())
}
+ #[test]
Review comment:
Added some test for `variance` to test merge rules.
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