PostgreSQL Sort

Question

I have a sort problem in PostgreSQL with below data:

name
-----
@CF
@CG
CD
CE

I used select name from table order by name, the

Answer 1

Use PostgreSQL's collation support to tell it you want a particular collation.

Given:

CREATE TABLE t AS VALUES ('CD'),('CE'),('@CF'),('@CE');

You can force byte-wise collation using:

SELECT * FROM t ORDER BY column1 COLLATE "C";

The "C" collation is a byte-wise collation that ignores national language rules, encoding, etc.