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Remove AggregateFunctionCountNotNullVariadic

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This commit is contained in:
VDimir 2019-10-13 18:42:39 +00:00
parent 99f531c58f
commit 7adad4251f
2 changed files with 1 additions and 71 deletions
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65
dbms/src/AggregateFunctions/AggregateFunctionCount.h
View File

@ -113,69 +113,4 @@ public:
const char * getHeaderFilePath() const override { return __FILE__; }
};
/// Count number of calls where all arguments are not NULL.
class AggregateFunctionCountNotNullVariadic final : public IAggregateFunctionDataHelper<AggregateFunctionCountData, AggregateFunctionCountNotNullVariadic>
{
public:
AggregateFunctionCountNotNullVariadic(const DataTypes & arguments, const Array & params)
: IAggregateFunctionDataHelper<AggregateFunctionCountData, AggregateFunctionCountNotNullVariadic>(arguments, params)
{
number_of_arguments = arguments.size();
if (number_of_arguments == 1)
throw Exception("Logical error: single argument is passed to AggregateFunctionCountNotNullVariadic", ErrorCodes::LOGICAL_ERROR);
if (number_of_arguments > MAX_ARGS)
throw Exception("Maximum number of arguments for aggregate function with Nullable types is " + toString(size_t(MAX_ARGS)),
ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
for (size_t i = 0; i < number_of_arguments; ++i)
is_nullable[i] = arguments[i]->isNullable();
}
String getName() const override { return "count"; }
DataTypePtr getReturnType() const override
{
return std::make_shared<DataTypeUInt64>();
}
void add(AggregateDataPtr place, const IColumn ** columns, size_t row_num, Arena *) const override
{
for (size_t i = 0; i < number_of_arguments; ++i)
if (is_nullable[i] && assert_cast<const ColumnNullable &>(*columns[i]).isNullAt(row_num))
return;
++data(place).count;
}
void merge(AggregateDataPtr place, ConstAggregateDataPtr rhs, Arena *) const override
{
data(place).count += data(rhs).count;
}
void serialize(ConstAggregateDataPtr place, WriteBuffer & buf) const override
{
writeVarUInt(data(place).count, buf);
}
void deserialize(AggregateDataPtr place, ReadBuffer & buf, Arena *) const override
{
readVarUInt(data(place).count, buf);
}
void insertResultInto(ConstAggregateDataPtr place, IColumn & to) const override
{
assert_cast<ColumnUInt64 &>(to).getData().push_back(data(place).count);
}
const char * getHeaderFilePath() const override { return __FILE__; }
private:
enum { MAX_ARGS = 8 };
size_t number_of_arguments = 0;
std::array<char, MAX_ARGS> is_nullable; /// Plain array is better than std::vector due to one indirection less.
};
}

5
dbms/src/AggregateFunctions/AggregateFunctionNull.cpp
View File

@ -53,12 +53,7 @@ public:
/// Special case for 'count' function. It could be called with Nullable arguments
/// - that means - count number of calls, when all arguments are not NULL.
if (nested_function && nested_function->getName() == "count")
{
if (arguments.size() == 1)
return std::make_shared<AggregateFunctionCountNotNullUnary>(arguments[0], params);
else
return std::make_shared<AggregateFunctionCountNotNullVariadic>(arguments, params);
}
if (has_null_types)
return std::make_shared<AggregateFunctionNothing>(arguments, params);