#include <sys/types.h>
#include "sql/enum_query_type.h"
#include "sql/mem_root_array.h"
#include "sql/sql_lex.h"
#include "sql/sql_select.h"
#include "thr_lock.h"

Typedefs
typedef Mem_root_array< Key_use >	Key_use_array

Functions
void	print_where (const THD thd, const Item cond, const char *info, enum_query_type query_type)

void	TEST_join (JOIN *join)

void	print_plan (JOIN join, uint idx, double record_count, double read_time, double current_read_time, const char info)
	Print the current state during query optimization. More...

void	dump_TABLE_LIST_graph (Query_block query_block, Table_ref tl)

void	print_keyuse_array (THD thd, Opt_trace_context trace, const Key_use_array *keyuse_array)

Variables
const char *	lock_descriptions [TL_WRITE_ONLY+1]

Typedef Documentation

◆ Key_use_array

typedef Mem_root_array<Key_use> Key_use_array

Function Documentation

◆ dump_TABLE_LIST_graph()

void dump_TABLE_LIST_graph	(	Query_block *	query_block,
		Table_ref *	tl
	)

◆ print_keyuse_array()

void print_keyuse_array	(	THD *	thd,
		Opt_trace_context *	trace,
		const Key_use_array *	keyuse_array
	)

◆ print_plan()

void print_plan	(	JOIN *	join,
		uint	idx,
		double	record_count,
		double	read_time,
		double	current_read_time,
		const char *	info
	)

Print the current state during query optimization.

Parameters

join	pointer to the structure providing all context info for the query
idx	length of the partial QEP in 'join->positions' also an index in the array 'join->best_ref'
record_count	estimate for the number of records returned by the best partial plan
read_time	the cost of the best partial plan. If a complete plan is printed (join->best_read is set), this argument is ignored.
current_read_time	the accumulated cost of the current partial plan
info	comment string to appear above the printout

This function prints to the log file DBUG_FILE the members of 'join' that are used during query optimization (join->positions, join->best_positions, and join->best_ref) and few other related variables (read_time, record_count). Useful to trace query optimizer functions.

◆ print_where()

void print_where	(	const THD *	thd,
		const Item *	cond,
		const char *	info,
		enum_query_type	query_type
	)

◆ TEST_join()

void TEST_join ( JOIN * join )

Variable Documentation

◆ lock_descriptions

const char* lock_descriptions[TL_WRITE_ONLY+1]

extern

Typedefs

Functions

Variables