xudong963 commented on code in PR #27119:
URL: https://github.com/apache/datafusion/pull/27119#discussion_r4520233280
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datafusion/physical-plan/src/aggregates/aggregate_argument.rs:
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@@ -7,10 +7,16 @@
use std::sync::Arc;
use crate::PhysicalExpr;
-use arrow::array::{ArrayRef, BooleanArray};
-use arrow::record_batch::RecordBatch;
-use datafusion_common::{Result, ScalarValue};
+use arrow::array::{ArrayRef, BooleanArray, NullArray, new_null_array};
Review Comment:
Done, added the Array import for `null_count`().
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