doki23 commented on a change in pull request #2068:
URL: https://github.com/apache/arrow-datafusion/pull/2068#discussion_r833872460
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File path: datafusion-physical-expr/src/expressions/case.rs
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@@ -523,6 +528,39 @@ mod tests {
Ok(())
}
+ #[test]
+ fn case_with_expr_divide_by_zero() -> Result<()> {
+ let batch = case_test_batch1()?;
+ let schema = batch.schema();
+
+ // CASE a when 0 THEN float64(null) ELSE 25.0 / cast(a, float64) END
+ let when1 = lit(ScalarValue::Int32(Some(0)));
Review comment:
We can evaluate `case_when` from beginning to the end and use
`evaluate_selection` for the `when_expr` so that we can omit the following
computation of the record whose `when_expr` is already true. Do I get your idea?
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