Join one to many and retrieve single result

Question

I have two tables, in PostgreSQL if that matters, with one to many relations. I need to join them so that for each \"one\" I only get single result from the \"many\" table. Not

Answer 1

Here's what I'd do on SQL Server.

SELECT a.ID,
    a.NAME,
    a.DATE,
    b.CODE1,
    b.CODE2
FROM TABLE_A a
JOIN TABLE_B b
    on a.ID = b.ID
WHERE b.SORT = (SELECT MIN(SORT) 
    FROM TABLE_B
    WHERE ID = b.ID)