CREATE TABLE users (
nick text PRIMARY KEY,
pass TEXT NOT NULL
);
INSERT INTO users VALUES ( 'larry', md5(random()::text) );
INSERT INTO users VALUES ( 'Tom', md5(random()::text) );
INSERT INTO users VALUES ( 'damian', md5(random()::text) );
INSERT INTO users VALUES ( 'NEAL', md5(random()::text) );
INSERT INTO users VALUES ( 'Bjørn', md5(random()::text) );
select * from users order by nick COLLATE "default";
select * from users order by nick COLLATE "C";
select * from users order by lower(nick) COLLATE "default";