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[fix](agg)count function should return 0 for null value (#13247)

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count(null) should return 0 instead of 1, the streaming_agg_serialize_to_column function didn't handle if the input value is null, this pr fix it.
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starocean999
2022-10-15 10:40:52 +08:00
committed by GitHub
parent 4bc33a54a1
commit f2fa9606c9
1 changed files with 5 additions and 1 deletions
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6
be/src/vec/aggregate_functions/aggregate_function_count.h
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@ -189,7 +189,11 @@ public:
const size_t num_rows, Arena* arena) const override {
auto& col = assert_cast<ColumnUInt64&>(*dst);
col.resize(num_rows);
col.get_data().assign(num_rows, 1UL);
auto& data = col.get_data();
const ColumnNullable& input_col = assert_cast<const ColumnNullable&>(*columns[0]);
for (size_t i = 0; i < num_rows; i++) {
data[i] = !input_col.is_null_at(i);
}
}
void deserialize_and_merge_from_column(AggregateDataPtr __restrict place, const IColumn& column,