yjshen commented on a change in pull request #2118:
URL: https://github.com/apache/arrow-datafusion/pull/2118#discussion_r838025887
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File path: datafusion/physical-expr/src/physical_expr.rs
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@@ -87,6 +87,10 @@ pub trait PhysicalExpr: Send + Sync + Display + Debug {
fn scatter(mask: &BooleanArray, truthy: &dyn Array) -> Result<ArrayRef> {
let truthy = truthy.data();
+ // update the mask so that any null null values become false
Review comment:
```suggestion
// update the mask so that any null values become false
```
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