implement_group_accumulators_count_distinct

Author: coderfender

datafusion/functions-aggregate-common/src/aggregate/count_distinct/groups.rs

@@ -1,3 +1,20 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
 use arrow::array::{
     Array, ArrayRef, AsArray, BooleanArray, Int64Array, ListBuilder, PrimitiveBuilder,
 };

datafusion/functions-aggregate/src/count.rs

@@ -381,13 +381,19 @@ impl AggregateUDFImpl for Count {
                     PrimitiveDistinctCountGroupsAccumulator::<UInt8Type>::new(),
                 )),
                 DataType::UInt16 => {
-                    Ok(Box::new(PrimitiveDistinctCountGroupsAccumulator::<UInt16Type>::new()))
+                    Ok(Box::new(PrimitiveDistinctCountGroupsAccumulator::<
+                        UInt16Type,
+                    >::new()))
                 }
                 DataType::UInt32 => {
-                    Ok(Box::new(PrimitiveDistinctCountGroupsAccumulator::<UInt32Type>::new()))
+                    Ok(Box::new(PrimitiveDistinctCountGroupsAccumulator::<
+                        UInt32Type,
+                    >::new()))
                 }
                 DataType::UInt64 => {
-                    Ok(Box::new(PrimitiveDistinctCountGroupsAccumulator::<UInt64Type>::new()))
+                    Ok(Box::new(PrimitiveDistinctCountGroupsAccumulator::<
+                        UInt64Type,
+                    >::new()))
                 }
                 _ => not_impl_err!(
                     "GroupsAccumulator not supported for COUNT(DISTINCT) with {}",