create database databse_name encoding 'encoding_type';
encoing_type 부분에 UTF-8로 설정.
defalut는 자동으로 UTF-8로 설정됨
drop database database_name;
$ psql -U username -d database_name
SQL> \\list
select pg_database.datname, pg_user.username from pg_database, pg_user where pg_database.databa = pg_user.usesysid;
SQL> \\c database_name