File histogram_cl.hpp¶

FileList > cubrid > src > optimizer > histogram > histogram_cl.hpp

#include <cstdio>
#include <cstdint>
#include <string>
#include "thread_compat.hpp"

Namespaces¶

Type	Name
namespace	hist

Classes¶

Type	Name
struct	histogram_key

Public Types¶

Type	Name
typedef struct db_value	DB_VALUE
typedef struct hist_stats	HIST_STATS
typedef struct parser_node	PT_NODE

Public Static Attributes¶

Type	Name
const char *	HISTOGRAM_QUERY_TEMPLATE
const char *	HISTOGRAM_WITH_SAMPLING_SCAN_QUERY_TEMPLATE
const char *	MCV_COUNT_QUERY_TEMPLATE = `/* multi line expression */`
const char *	NULL_FREQUENCY_QUERY_TEMPLATE = `/* multi line expression */`
const char *	NULL_FREQUENCY_WITH_SAMPLING_SCAN_QUERY_TEMPLATE = `/* multi line expression */`

Public Functions¶

Type	Name
int	analyze_classes (THREAD_ENTRY * thread_p, const char * tbl_name, const char * attr_name, int max_number_of_buckets, bool with_fullscan, MOP classop)
int	db_get_histogram (MOP classop, const char * attr_name, DB_OBJECT ** histogram_obj)
int	dump_histogram (MOP classop, const char * attr_name, DB_TYPE attr_type, bool with_fullscan, bool detailed, int error, FILE * f)
int	get_histogram (THREAD_ENTRY * thread_p, const char * tbl_name, const char * attr_name, int max_number_of_buckets, bool with_fullscan, char histogram_blob, int** * histogram_total_length)
int	get_null_frequency (THREAD_ENTRY * thread_p, const char * tbl_name, const char * attr_name, bool with_fullscan, MOP classop)
void	histogram_get_comp_selectivity (PT_NODE * lhs, DB_VALUE * rhs_db_value, bool is_ge, bool include_equal, double * selectivity, bool * success)
void	histogram_get_equal_selectivity (PT_NODE * lhs, DB_VALUE * rhs_db_value, double * selectivity, bool * success)
void	histogram_get_like_selectivity (PT_NODE * lhs, DB_VALUE * rhs_db_value, double * selectivity, bool * success)
bool	is_histogrammable_type (DB_TYPE type)
int	set_histogram (THREAD_ENTRY * thread_p, const char * tbl_name, const char * attr_name, char * histogram_blob, int histogram_total_length, MOP classop)
int	stats_free_histogram_and_init (HIST_STATS * histogram)
int	stats_get_histogram (MOP classop, HIST_STATS ** histogram)

Public Types Documentation¶

typedef DB_VALUE¶

typedef struct db_value DB_VALUE;

typedef HIST_STATS¶

typedef struct hist_stats HIST_STATS;

typedef PT_NODE¶

typedef struct parser_node PT_NODE;

Public Static Attributes Documentation¶

variable HISTOGRAM_QUERY_TEMPLATE¶

const char* HISTOGRAM_QUERY_TEMPLATE;

variable HISTOGRAM_WITH_SAMPLING_SCAN_QUERY_TEMPLATE¶

const char* HISTOGRAM_WITH_SAMPLING_SCAN_QUERY_TEMPLATE;

variable MCV_COUNT_QUERY_TEMPLATE¶

const char* MCV_COUNT_QUERY_TEMPLATE;

variable NULL_FREQUENCY_QUERY_TEMPLATE¶

const char* NULL_FREQUENCY_QUERY_TEMPLATE;

variable NULL_FREQUENCY_WITH_SAMPLING_SCAN_QUERY_TEMPLATE¶

const char* NULL_FREQUENCY_WITH_SAMPLING_SCAN_QUERY_TEMPLATE;

Public Functions Documentation¶

function analyze_classes¶

int analyze_classes (
    THREAD_ENTRY * thread_p,
    const  char * tbl_name,
    const  char * attr_name,
    int max_number_of_buckets,
    bool with_fullscan,
    MOP classop
)

function db_get_histogram¶

int db_get_histogram (
    MOP classop,
    const  char * attr_name,
    DB_OBJECT ** histogram_obj
)

function dump_histogram¶

int dump_histogram (
    MOP classop,
    const  char * attr_name,
    DB_TYPE attr_type,
    bool with_fullscan,
    bool detailed,
    int error,
    FILE * f
)

function get_histogram¶

int get_histogram (
    THREAD_ENTRY * thread_p,
    const  char * tbl_name,
    const  char * attr_name,
    int max_number_of_buckets,
    bool with_fullscan,
    char ** histogram_blob,
    int * histogram_total_length
)

function get_null_frequency¶

int get_null_frequency (
    THREAD_ENTRY * thread_p,
    const  char * tbl_name,
    const  char * attr_name,
    bool with_fullscan,
    MOP classop
)

function histogram_get_comp_selectivity¶

void histogram_get_comp_selectivity (
    PT_NODE * lhs,
    DB_VALUE * rhs_db_value,
    bool is_ge,
    bool include_equal,
    double * selectivity,
    bool * success
)

function histogram_get_equal_selectivity¶

void histogram_get_equal_selectivity (
    PT_NODE * lhs,
    DB_VALUE * rhs_db_value,
    double * selectivity,
    bool * success
)

function histogram_get_like_selectivity¶

void histogram_get_like_selectivity (
    PT_NODE * lhs,
    DB_VALUE * rhs_db_value,
    double * selectivity,
    bool * success
)

function is_histogrammable_type¶

bool is_histogrammable_type (
    DB_TYPE type
)

function set_histogram¶

int set_histogram (
    THREAD_ENTRY * thread_p,
    const  char * tbl_name,
    const  char * attr_name,
    char * histogram_blob,
    int histogram_total_length,
    MOP classop
)

function stats_free_histogram_and_init¶

int stats_free_histogram_and_init (
    HIST_STATS * histogram
)

function stats_get_histogram¶

int stats_get_histogram (
    MOP classop,
    HIST_STATS ** histogram
)

The documentation for this class was generated from the following file cubrid/src/optimizer/histogram/histogram_cl.hpp