MySQL  8.0.16
Source Code Documentation
Derived_key Class Reference

This structure is used to keep info about possible key for the result table of a derived table/view. More...

#include <table.h>

Public Attributes

table_map referenced_by
 
Field_map used_fields
 

Detailed Description

This structure is used to keep info about possible key for the result table of a derived table/view.

The 'referenced_by' is the table map of tables to which this possible key corresponds. The 'used_field' is a map of fields of which this key consists of. See also the comment for the TABLE_LIST::update_derived_keys function.

Member Data Documentation

◆ referenced_by

table_map Derived_key::referenced_by

◆ used_fields

Field_map Derived_key::used_fields

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