Github user hbdeshmukh commented on a diff in the pull request: https://github.com/apache/incubator-quickstep/pull/90#discussion_r74795095 --- Diff: expressions/aggregation/AggregationHandleAvg.hpp --- @@ -156,11 +217,12 @@ class AggregationHandleAvg : public AggregationConcreteHandle { */ void aggregateOnDistinctifyHashTableForGroupBy( const AggregationStateHashTableBase &distinctify_hash_table, - AggregationStateHashTableBase *aggregation_hash_table) const override; + AggregationStateHashTableBase *aggregation_hash_table, + int index) const override; - void mergeGroupByHashTables( - const AggregationStateHashTableBase &source_hash_table, - AggregationStateHashTableBase *destination_hash_table) const override; + size_t getPayloadSize() const override { --- End diff -- It is considered a good practice to use the ``std`` prefix in the header file. Therefore, can you please change the ``size_t`` to ``std::size_t``?
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