xudong963 commented on a change in pull request #1135:
URL: https://github.com/apache/arrow-datafusion/pull/1135#discussion_r743737170
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File path: datafusion/src/physical_plan/hash_join.rs
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@@ -751,12 +788,19 @@ fn build_join_indexes(
}
macro_rules! equal_rows_elem {
- ($array_type:ident, $l: ident, $r: ident, $left: ident, $right: ident) =>
{{
+ ($array_type:ident, $l: ident, $r: ident, $left: ident, $right: ident,
$null_equal_null: ident) => {{
let left_array = $l.as_any().downcast_ref::<$array_type>().unwrap();
let right_array = $r.as_any().downcast_ref::<$array_type>().unwrap();
match (left_array.is_null($left), right_array.is_null($right)) {
(false, false) => left_array.value($left) ==
right_array.value($right),
+ (true, true) => {
+ if $null_equal_null {
Review comment:
Good point, I think you mean `$null_equal_null` not `!$null_equal_null` 😁
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