File histogram_cl.cpp¶

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

#include "dbtype_def.h"
#include "histogram_cl.hpp"
#include "db.h"
#include "histogram_builder.hpp"
#include "thread_compat.hpp"
#include "db_query.h"
#include "locator_cl.h"
#include "schema_manager.h"
#include "schema_system_catalog_constants.h"
#include <stdio.h>
#include <stdbool.h>
#include <string>
#include "parser.h"
#include "class_object.h"
#include "object_accessor.h"
#include "authenticate.h"
#include "query_planner.h"

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)
double	numeric_domain_frac_dbl_lt (double lo, double hi, double v)
double	numeric_domain_frac_u64_lt (std::uint64_t lo, std::uint64_t hi, std::uint64_t v)
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 Static Functions¶

Type	Name
double	clamp01 (double x)
bool	histogram_extract_key (const DB_VALUE * db_val, hist::histogram_key & key)
bool	histogram_init_reader_from_lhs (PT_NODE * lhs, hist::HistogramReader & reader)
bool	like_match_string (const std::string & pattern, const std::string & value)
double	numeric_domain_frac_i64_lt (std::int64_t lo, std::int64_t hi, std::int64_t v)
double	pattern_heuristic_selectivity (const std::string & pattern, char escape_char)
double	string_domain_frac_lt (const std::string & lo, const std::string & hi, const std::string & v)
double	string_pos (const unsigned char * s, std::size_t len, std::size_t max_len=16)

Macros¶

Type	Name
define	HIST_DUMP_WIDTH `47 /\* inner width [of](broker__monitor_8c.md#function-timeout) [the](broker__monitor_8c.md#function-timeout) histogram \*/`

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 numeric_domain_frac_dbl_lt¶

double numeric_domain_frac_dbl_lt (
    double lo,
    double hi,
    double v
)

function numeric_domain_frac_u64_lt¶

double numeric_domain_frac_u64_lt (
    std::uint64_t lo,
    std::uint64_t hi,
    std::uint64_t v
)

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
)

Public Static Functions Documentation¶

function clamp01¶

static double clamp01 (
    double x
)

function histogram_extract_key¶

static bool histogram_extract_key (
    const  DB_VALUE * db_val,
    hist::histogram_key & key
)

function histogram_init_reader_from_lhs¶

static bool histogram_init_reader_from_lhs (
    PT_NODE * lhs,
    hist::HistogramReader & reader
)

function like_match_string¶

static bool like_match_string (
    const std::string & pattern,
    const std::string & value
)

function numeric_domain_frac_i64_lt¶

static double numeric_domain_frac_i64_lt (
    std::int64_t lo,
    std::int64_t hi,
    std::int64_t v
)

function pattern_heuristic_selectivity¶

static double pattern_heuristic_selectivity (
    const std::string & pattern,
    char escape_char
)

function string_domain_frac_lt¶

static double string_domain_frac_lt (
    const std::string & lo,
    const std::string & hi,
    const std::string & v
)

function string_pos¶

static double string_pos (
    const  unsigned  char * s,
    std::size_t len,
    std::size_t max_len=16
)

Macro Definition Documentation¶

define HIST_DUMP_WIDTH¶

#define HIST_DUMP_WIDTH `47  /* inner width of  the histogram */`

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