PostgreSQL , Select from 2 tables, but only the latest element from table 2

Question

Hey, I have 2 tables in PostgreSql:

1 - documents: id, title
2 - updates: id, document_id, date

and some data:

documents:

Answer 1

From the top of my head:

ORDER BY date DESC LIMIT 1

If you really want only id 1 your can use this query:

SELECT * FROM documents,updates 
    WHERE documents.id=1 AND updates.document_id=1 
    ORDER BY date DESC LIMIT 1

http://www.postgresql.org/docs/8.4/interactive/queries-limit.html