Index: Key V.S. Non-Key Column
前置作業：
create students table with many columns and insert multiple dummy data
postgres=# create table students (
id serial primary key,
g int,
firstname text,
lastname text,
middlename text,
address text,
bio text,
dob date,
id1 int,
id2 int,
id3 i...
adrienetz.hashnode.dev3 min read