key_spec.cc File Reference

#include "sql/key_spec.h"
#include <stddef.h>
#include <algorithm>
#include <cstring>
#include <string>
#include "m_ctype.h"
#include "my_dbug.h"
#include "my_inttypes.h"
#include "my_sys.h"
#include "mysql_com.h"
#include "mysqld_error.h"
#include "sql/create_field.h"
#include "sql/dd/dd.h"
#include "sql/dd/dictionary.h"
#include "sql/derror.h"
#include "sql/item.h"
#include "sql/item_func.h"
#include "sql/sql_class.h"
#include "sql/sql_parse.h"
#include "sql/table.h"
#include "sql_lex.h"

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

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