opt_costmodel.h File Reference

#include <assert.h>
#include <stddef.h>
#include <sys/types.h>
#include "sql/opt_costconstants.h"

Go to the source code of this file.

Classes
class	Cost_model_server
	API for getting cost estimates for server operations that are not directly related to a table object. More...
class	Cost_model_table
	API for getting cost estimates for operations on table data. More...

Variables
constexpr const double	DISK_SEEK_BASE_COST {0.9}
constexpr const int	BLOCKS_IN_AVG_SEEK {128}
constexpr const double	DISK_SEEK_PROP_COST {0.1 / BLOCKS_IN_AVG_SEEK}

Variable Documentation

BLOCKS_IN_AVG_SEEK

constexpr const int BLOCKS_IN_AVG_SEEK {128}

constexpr

DISK_SEEK_BASE_COST

constexpr const double DISK_SEEK_BASE_COST {0.9}

constexpr

DISK_SEEK_PROP_COST

constexpr const double DISK_SEEK_PROP_COST {0.1 / BLOCKS_IN_AVG_SEEK}

constexpr