pacman -S postgresql
chmod postgres:postgres /var/lib/postgres

sudo -iu postgres
initdb -D /var/lib/postgres/data

vim data/pg_hba.conf
vim data/postgresql.conf

'''
exit
systemd restart postgres
sudo -iu postgres
'''

createuser user_name
createdb -O db_owner db_name
psql db_name db_user

\du
\l
\c db
\dt
\q


End everything with ;

CREATE DATABASE d
USE d
DROP DATABASE d
CREATE TABLE t(...) 
DROP TABLE t
TRUNCATE TABLE t

INSERT INTO t VALUES(...)
SELECT ... FROM t [WHERE ...]
UPDATE t SET ... WHERE ...
DELETE FROM t WHERE ...

ALTER DATABASE name RENAME TO new_name
ALTER DATABASE name OWNER TO new_owner

ALTER TABLE name RENAME TO new_name
ALTER TABLE name SET SCHEMA new_schema

SQL DDL (Date Definition Language) - create, alter, drop, rename, truncate, comment
SQL DQL (Date Query Language) - select
SQL DML (Date Manipulation Language) - insert, update, delete, merge, call, explain plan, lock table
SQL DCL (Date Control Language) - grant, revoke