MySQL 9.0.0
Source Code Documentation
|
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 |
uint | key_part_count {0} |
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_ref::update_derived_keys function.
uint Derived_key::key_part_count {0} |
table_map Derived_key::referenced_by |
Field_map Derived_key::used_fields |