key_spec.h File Reference

#include <sys/types.h>
#include "lex_string.h"
#include "m_string.h"
#include "my_base.h"
#include "sql/mem_root_array.h"
#include "sql/sql_list.h"

Go to the source code of this file.

Classes
class	KEY_CREATE_INFO
class	Key_part_spec
class	Key_spec
class	Foreign_key_spec

Enumerations
enum	keytype {   KEYTYPE_PRIMARY , KEYTYPE_UNIQUE , KEYTYPE_MULTIPLE , KEYTYPE_FULLTEXT ,   KEYTYPE_SPATIAL , KEYTYPE_FOREIGN }
enum	fk_option {   FK_OPTION_UNDEF , FK_OPTION_RESTRICT , FK_OPTION_CASCADE , FK_OPTION_SET_NULL ,   FK_OPTION_NO_ACTION , FK_OPTION_DEFAULT }
enum	fk_match_opt { FK_MATCH_UNDEF , FK_MATCH_FULL , FK_MATCH_PARTIAL , FK_MATCH_SIMPLE }
enum	enum_order : int { ORDER_NOT_RELEVANT = 1 , ORDER_ASC , ORDER_DESC }

Functions
bool	foreign_key_prefix (const Key_spec *a, const Key_spec *b)
	Test if a foreign key (= generated key) is a prefix of the given key (ignoring key name, key type and order of columns) More...

Variables
KEY_CREATE_INFO	default_key_create_info

Enumeration Type Documentation

enum_order

enum enum_order : int

Enumerator
ORDER_NOT_RELEVANT
ORDER_ASC
ORDER_DESC

fk_match_opt

enum fk_match_opt

Enumerator
FK_MATCH_UNDEF
FK_MATCH_FULL
FK_MATCH_PARTIAL
FK_MATCH_SIMPLE

fk_option

enum fk_option

Enumerator
FK_OPTION_UNDEF
FK_OPTION_RESTRICT
FK_OPTION_CASCADE
FK_OPTION_SET_NULL
FK_OPTION_NO_ACTION
FK_OPTION_DEFAULT

keytype

enum keytype

Enumerator
KEYTYPE_PRIMARY
KEYTYPE_UNIQUE
KEYTYPE_MULTIPLE
KEYTYPE_FULLTEXT
KEYTYPE_SPATIAL
KEYTYPE_FOREIGN

Function Documentation

foreign_key_prefix()

bool foreign_key_prefix	(	const Key_spec *	a,
		const Key_spec *	b
	)

Test if a foreign key (= generated key) is a prefix of the given key (ignoring key name, key type and order of columns)

Note

This is only used to test if an index for a FOREIGN KEY exists. We only compare field names.

Return values

false	Generated key is a prefix of other key
true	Not equal

Variable Documentation

default_key_create_info

KEY_CREATE_INFO default_key_create_info

extern