PostgreSQL

설치 - Mac OS X

# install the binary
$ brew install postgresql

# init it
$ initdb /usr/local/var/postgres

# start the postgres server
$ postgres -D /usr/local/var/postgres

# create your database
$ createdb mydb

기본 명령어

사용자 관련

사용자 생성

create role <username> with login password <password>;

Super User

ALTER USER myuser WITH SUPERUSER;

권한 지정

grant usage on schema public to <username>;
grant all on schema public to <username>;
grant all privileges on database <dbname> to <username>;
grant all on all tables in schema public to <username>
grant select on <table> to <username>;

읽기 전용 계정 만들기 http://stackoverflow.com/questions/760210/how-do-you-create-a-read-only-user-in-postgresql

GRANT CONNECT ON DATABASE mydb TO xxx;
GRANT USAGE ON SCHEMA public TO xxx;
GRANT SELECT ON mytable TO xxx;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO xxx;

커넥션 현황 보기

SELECT count(*) from pg_stat_activity;

데이터베이스 정보 보기

데이터베이스 목록

\l

role 목록

\du

테이블, 뷰, 권한

\dp

커맨드라인 명령어

파이썬에서 사용하기

import psycopg2
conn = psycopg2.connect('host=db.com user=youngrok password=blahblah dbname=mydb
cursor = conn.cursor()
cursor.execute('SELECT * FROM auth_user')
print cursor.fetchall()