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#pragma once
#include <IO/VarInt.h>
#include <IO/WriteHelpers.h>
#include <array>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeAggregateFunction.h>
#include <Columns/ColumnNullable.h>
#include <Columns/ColumnsCommon.h>
#include <AggregateFunctions/IAggregateFunction.h>
#include <AggregateFunctions/AggregateFunctionFactory.h>
#include <Common/assert_cast.h>
#include "clickhouse_config.h"
#if USE_EMBEDDED_COMPILER
# error #include <llvm/IR/IRBuilder.h>
# include <DataTypes/Native.h>
#endif
namespace DB
{
struct Settings;
struct AggregateFunctionCountData
{
UInt64 count = 0;
};
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
}
/// Simply count number of calls.
class AggregateFunctionCount final : public IAggregateFunctionDataHelper<AggregateFunctionCountData, AggregateFunctionCount>
{
public:
explicit AggregateFunctionCount(const DataTypes & argument_types_)
: IAggregateFunctionDataHelper(argument_types_, {}, createResultType())
{}
String getName() const override { return "count"; }
static DataTypePtr createResultType()
{
return std::make_shared<DataTypeUInt64>();
}
bool allocatesMemoryInArena() const override { return false; }
void add(AggregateDataPtr __restrict place, const IColumn **, size_t, Arena *) const override
{
++data(place).count;
}
void addManyDefaults(
AggregateDataPtr __restrict place,
const IColumn ** /*columns*/,
size_t length,
Arena * /*arena*/) const override
{
data(place).count += length;
}
void addBatchSinglePlace(
size_t row_begin,
size_t row_end,
AggregateDataPtr __restrict place,
const IColumn ** columns,
Arena *,
ssize_t if_argument_pos) const override
{
if (if_argument_pos >= 0)
{
const auto & flags = assert_cast<const ColumnUInt8 &>(*columns[if_argument_pos]).getData();
data(place).count += countBytesInFilter(flags);
}
else
{
data(place).count += row_end - row_begin;
}
}
void addBatchSinglePlaceNotNull(
size_t row_begin,
size_t row_end,
AggregateDataPtr __restrict place,
const IColumn ** columns,
const UInt8 * null_map,
Arena *,
ssize_t if_argument_pos) const override
{
if (if_argument_pos >= 0)
{
const auto & flags = assert_cast<const ColumnUInt8 &>(*columns[if_argument_pos]).getData();
data(place).count += countBytesInFilterWithNull(flags, null_map, row_begin, row_end);
}
else
{
size_t rows = row_end - row_begin;
data(place).count += rows - countBytesInFilter(null_map, row_begin, row_end);
}
}
bool haveSameStateRepresentationImpl(const IAggregateFunction & rhs) const override
{
return this->getName() == rhs.getName();
}
DataTypePtr getNormalizedStateType() const override
{
/// Return normalized state type: count()
AggregateFunctionProperties properties;
return std::make_shared<DataTypeAggregateFunction>(
AggregateFunctionFactory::instance().get(getName(), {}, {}, properties), DataTypes{}, Array{});
}
void merge(AggregateDataPtr __restrict place, ConstAggregateDataPtr rhs, Arena *) const override
{
data(place).count += data(rhs).count;
}
void serialize(ConstAggregateDataPtr __restrict place, WriteBuffer & buf, std::optional<size_t> /* version */) const override
{
writeVarUInt(data(place).count, buf);
}
void deserialize(AggregateDataPtr __restrict place, ReadBuffer & buf, std::optional<size_t> /* version */, Arena *) const override
{
readVarUInt(data(place).count, buf);
}
void insertResultInto(AggregateDataPtr __restrict place, IColumn & to, Arena *) const override
{
assert_cast<ColumnUInt64 &>(to).getData().push_back(data(place).count);
}
/// Reset the state to specified value. This function is not the part of common interface.
static void set(AggregateDataPtr __restrict place, UInt64 new_count)
{
data(place).count = new_count;
}
AggregateFunctionPtr getOwnNullAdapter(
const AggregateFunctionPtr &, const DataTypes & types, const Array & params, const AggregateFunctionProperties & /*properties*/) const override;
#if USE_EMBEDDED_COMPILER
bool isCompilable() const override
{
bool is_compilable = true;
for (const auto & argument_type : argument_types)
is_compilable &= canBeNativeType(*argument_type);
return is_compilable;
}
void compileCreate(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_ptr) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
b.CreateMemSet(aggregate_data_ptr, llvm::ConstantInt::get(b.getInt8Ty(), 0), sizeof(AggregateFunctionCountData), llvm::assumeAligned(this->alignOfData()));
}
void compileAdd(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_ptr, const ValuesWithType &) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
auto * return_type = toNativeType(b, this->getResultType());
auto * count_value_ptr = aggregate_data_ptr;
auto * count_value = b.CreateLoad(return_type, count_value_ptr);
auto * updated_count_value = b.CreateAdd(count_value, llvm::ConstantInt::get(return_type, 1));
b.CreateStore(updated_count_value, count_value_ptr);
}
void compileMerge(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_dst_ptr, llvm::Value * aggregate_data_src_ptr) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
auto * return_type = toNativeType(b, this->getResultType());
auto * count_value_dst_ptr = aggregate_data_dst_ptr;
auto * count_value_dst = b.CreateLoad(return_type, count_value_dst_ptr);
auto * count_value_src_ptr = aggregate_data_src_ptr;
auto * count_value_src = b.CreateLoad(return_type, count_value_src_ptr);
auto * count_value_dst_updated = b.CreateAdd(count_value_dst, count_value_src);
b.CreateStore(count_value_dst_updated, count_value_dst_ptr);
}
llvm::Value * compileGetResult(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_ptr) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
auto * return_type = toNativeType(b, this->getResultType());
auto * count_value_ptr = aggregate_data_ptr;
return b.CreateLoad(return_type, count_value_ptr);
}
#endif
};
/// Simply count number of not-NULL values.
class AggregateFunctionCountNotNullUnary final
: public IAggregateFunctionDataHelper<AggregateFunctionCountData, AggregateFunctionCountNotNullUnary>
{
public:
AggregateFunctionCountNotNullUnary(const DataTypePtr & argument, const Array & params)
: IAggregateFunctionDataHelper<AggregateFunctionCountData, AggregateFunctionCountNotNullUnary>({argument}, params, createResultType())
{
if (!argument->isNullable())
throw Exception(ErrorCodes::LOGICAL_ERROR, "Logical error: not Nullable data type passed to AggregateFunctionCountNotNullUnary");
}
String getName() const override { return "count"; }
static DataTypePtr createResultType()
{
return std::make_shared<DataTypeUInt64>();
}
bool allocatesMemoryInArena() const override { return false; }
void add(AggregateDataPtr __restrict place, const IColumn ** columns, size_t row_num, Arena *) const override
{
data(place).count += !assert_cast<const ColumnNullable &>(*columns[0]).isNullAt(row_num);
}
void addBatchSinglePlace(
size_t row_begin,
size_t row_end,
AggregateDataPtr __restrict place,
const IColumn ** columns,
Arena *,
ssize_t if_argument_pos) const override
{
const auto & nc = assert_cast<const ColumnNullable &>(*columns[0]);
if (if_argument_pos >= 0)
{
const auto & flags = assert_cast<const ColumnUInt8 &>(*columns[if_argument_pos]).getData();
data(place).count += countBytesInFilterWithNull(flags, nc.getNullMapData().data(), row_begin, row_end);
}
else
{
size_t rows = row_end - row_begin;
data(place).count += rows - countBytesInFilter(nc.getNullMapData().data(), row_begin, row_end);
}
}
bool haveSameStateRepresentationImpl(const IAggregateFunction & rhs) const override
{
return this->getName() == rhs.getName();
}
DataTypePtr getNormalizedStateType() const override
{
/// Return normalized state type: count()
AggregateFunctionProperties properties;
return std::make_shared<DataTypeAggregateFunction>(
AggregateFunctionFactory::instance().get(getName(), {}, {}, properties), DataTypes{}, Array{});
}
void merge(AggregateDataPtr __restrict place, ConstAggregateDataPtr rhs, Arena *) const override
{
data(place).count += data(rhs).count;
}
void serialize(ConstAggregateDataPtr __restrict place, WriteBuffer & buf, std::optional<size_t> /* version */) const override
{
writeVarUInt(data(place).count, buf);
}
void deserialize(AggregateDataPtr __restrict place, ReadBuffer & buf, std::optional<size_t> /* version */, Arena *) const override
{
readVarUInt(data(place).count, buf);
}
void insertResultInto(AggregateDataPtr __restrict place, IColumn & to, Arena *) const override
{
assert_cast<ColumnUInt64 &>(to).getData().push_back(data(place).count);
}
#if USE_EMBEDDED_COMPILER
bool isCompilable() const override
{
bool is_compilable = true;
for (const auto & argument_type : argument_types)
is_compilable &= canBeNativeType(*argument_type);
return is_compilable;
}
void compileCreate(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_ptr) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
b.CreateMemSet(aggregate_data_ptr, llvm::ConstantInt::get(b.getInt8Ty(), 0), sizeof(AggregateFunctionCountData), llvm::assumeAligned(this->alignOfData()));
}
void compileAdd(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_ptr, const ValuesWithType & arguments) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
auto * return_type = toNativeType(b, this->getResultType());
auto * is_null_value = b.CreateExtractValue(arguments[0].value, {1});
auto * increment_value = b.CreateSelect(is_null_value, llvm::ConstantInt::get(return_type, 0), llvm::ConstantInt::get(return_type, 1));
auto * count_value_ptr = aggregate_data_ptr;
auto * count_value = b.CreateLoad(return_type, count_value_ptr);
auto * updated_count_value = b.CreateAdd(count_value, increment_value);
b.CreateStore(updated_count_value, count_value_ptr);
}
void compileMerge(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_dst_ptr, llvm::Value * aggregate_data_src_ptr) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
auto * return_type = toNativeType(b, this->getResultType());
auto * count_value_dst_ptr = aggregate_data_dst_ptr;
auto * count_value_dst = b.CreateLoad(return_type, count_value_dst_ptr);
auto * count_value_src_ptr = aggregate_data_src_ptr;
auto * count_value_src = b.CreateLoad(return_type, count_value_src_ptr);
auto * count_value_dst_updated = b.CreateAdd(count_value_dst, count_value_src);
b.CreateStore(count_value_dst_updated, count_value_dst_ptr);
}
llvm::Value * compileGetResult(llvm::IRBuilderBase & builder, llvm::Value * aggregate_data_ptr) const override
{
llvm::IRBuilder<> & b = static_cast<llvm::IRBuilder<> &>(builder);
auto * return_type = toNativeType(b, this->getResultType());
auto * count_value_ptr = aggregate_data_ptr;
return b.CreateLoad(return_type, count_value_ptr);
}
#endif
};
}
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