aggregate-functions.cc File Reference

#include "exprs/aggregate-functions.h"
#include <math.h>
#include <sstream>
#include <algorithm>
#include <boost/random/ranlux.hpp>
#include <boost/random/uniform_int.hpp>
#include "common/logging.h"
#include "runtime/decimal-value.h"
#include "runtime/string-value.h"
#include "runtime/timestamp-value.h"
#include "exprs/anyval-util.h"
#include "common/names.h"

Include dependency graph for aggregate-functions.cc:

Go to the source code of this file.

Classes
struct	impala::AvgState
struct	impala::DecimalAvgState
struct	impala::ReservoirSample< T >
struct	impala::ReservoirSample< StringVal >
struct	impala::ReservoirSampleState< T >
struct	impala::KnuthVarianceState
struct	impala::RankState

Namespaces
	impala
	This file contains type definitions that are used throughout the code base.

Typedefs
typedef int	impala::StringConcatHeader

Functions
template<typename T >
StringVal	impala::ToStringVal (FunctionContext *context, T val)
static void	impala::SetDistinctEstimateBit (uint8_t *bitmap, uint32_t row_index, uint32_t bit_index)
static bool	impala::GetDistinctEstimateBit (uint8_t *bitmap, uint32_t row_index, uint32_t bit_index)
string	impala::DistinctEstimateBitMapToString (uint8_t *v)
double	impala::DistinceEstimateFinalize (const StringVal &src)
template<typename T >
bool	impala::SampleValLess (const ReservoirSample< T > &i, const ReservoirSample< T > &j)
template<>
bool	impala::SampleValLess (const ReservoirSample< StringVal > &i, const ReservoirSample< StringVal > &j)
template<>
bool	impala::SampleValLess (const ReservoirSample< DecimalVal > &i, const ReservoirSample< DecimalVal > &j)
template<>
bool	impala::SampleValLess (const ReservoirSample< TimestampVal > &i, const ReservoirSample< TimestampVal > &j)
template<typename T >
bool	impala::SampleKeyGreater (const ReservoirSample< T > &i, const ReservoirSample< T > &j)
template<typename T >
void	impala::PrintSample (const ReservoirSample< T > &v, ostream *os)
template<>
void	impala::PrintSample (const ReservoirSample< TinyIntVal > &v, ostream *os)
template<>
void	impala::PrintSample (const ReservoirSample< StringVal > &v, ostream *os)
template<>
void	impala::PrintSample (const ReservoirSample< DecimalVal > &v, ostream *os)
template<>
void	impala::PrintSample (const ReservoirSample< TimestampVal > &v, ostream *os)
double	impala::ComputeKnuthVariance (const KnuthVarianceState &state, bool pop)

Variables
static const StringVal	impala::DEFAULT_STRING_CONCAT_DELIM ((uint8_t *)", ", 2)
static const int	impala::NUM_PC_BITMAPS = 64
static const int	impala::PC_BITMAP_LENGTH = 32
static const float	impala::PC_THETA = 0.77351f
static const int	impala::NUM_BUCKETS = 100
static const int	impala::NUM_SAMPLES_PER_BUCKET = 200
static const int	impala::NUM_SAMPLES = NUM_BUCKETS * NUM_SAMPLES_PER_BUCKET
static const int	impala::MAX_STRING_SAMPLE_LEN = 10