andygrove commented on PR #3275:
URL:
https://github.com/apache/arrow-datafusion/pull/3275#issuecomment-1230329869
Actually, one other thing will be to map these new `Expr` to the same
physical plan as `Is[Not]DistinctFrom` in the physical planner:
```rust
Operator::IsDistinctFrom => {
match (left_data_type, right_data_type) {
// exchange lhs and rhs when lhs is Null, since
`binary_array_op` is
// always try to down cast array according to $LEFT
expression.
(DataType::Null, _) => {
binary_array_op!(right, left, is_distinct_from)
}
_ => binary_array_op!(left, right, is_distinct_from),
}
}
```
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