https://blog.uniqbuild.co.kr/?p=516
psql database_name
CREATE DATABASE sentry WITH ENCODING = 'UTF8' OWNER = postgresql;
\c database_name
\du
select * from pg_user;
create user
<id>
with encrypted password<password>
;
alter user
<id>
with password<password>
;
create database owner ;
\l
select * from pg_tables where tableowner = "pass"
alter table users drop column phone;