Data structure for a field in an index. More...

#include <dict0mem.h>

Public Member Functions
	dict_field_t ()

uint16_t	get_phy_pos () const

Public Attributes
dict_col_t *	col
	pointer to the table column More...

id_name_t	name
	name of the column More...

unsigned	prefix_len: 12
	0 or the length of the column prefix in bytes in a MySQL index of type, e.g., INDEX (textcol(25)); must be smaller than DICT_MAX_FIELD_LEN_BY_FORMAT; NOTE that in the UTF-8 charset, MySQL sets this to (mbmaxlen * the prefix len) in UTF-8 chars More...

unsigned	fixed_len: 10
	0 or the fixed length of the column if smaller than DICT_ANTELOPE_MAX_INDEX_COL_LEN More...

unsigned	is_ascending: 1
	0=DESC, 1=ASC More...

Detailed Description

Data structure for a field in an index.

Constructor & Destructor Documentation

◆ dict_field_t()

dict_field_t::dict_field_t ( )

inline

Member Function Documentation

◆ get_phy_pos()

uint16_t dict_field_t::get_phy_pos ( ) const

inline

Member Data Documentation

◆ col

dict_col_t* dict_field_t::col

pointer to the table column

◆ fixed_len

unsigned dict_field_t::fixed_len

0 or the fixed length of the column if smaller than DICT_ANTELOPE_MAX_INDEX_COL_LEN

◆ is_ascending

unsigned dict_field_t::is_ascending

0=DESC, 1=ASC

◆ name

id_name_t dict_field_t::name

name of the column

◆ prefix_len

unsigned dict_field_t::prefix_len

0 or the length of the column prefix in bytes in a MySQL index of type, e.g., INDEX (textcol(25)); must be smaller than DICT_MAX_FIELD_LEN_BY_FORMAT; NOTE that in the UTF-8 charset, MySQL sets this to (mbmaxlen * the prefix len) in UTF-8 chars

The documentation for this struct was generated from the following file:

storage/innobase/include/dict0mem.h

Public Member Functions

Public Attributes