我有一个表,主键的一部分是另一个表的外键。当fk列是pk的子集时,主键索引是否会用作外键的索引?
create table player_result (
event_id integer not null,
pub_time timestamp not null,
name_key varchar(128) not null,
email_address varchar(128),
withdrawn boolean not null,
place integer,
realized_values hstore,
primary key (event_id, pub_time, name_key),
foreign key (email_address) references email(address),
foreign key (event_id, pub_time) references event_publish(event_id, pub_time));
将主键足以回到event_id
和pub_time
外键生成的索引?