Quotes in SQL

Hi--I'm completely new to PostGres... From what I read in the documentation, sql here is same as there.

SELECT * FROM FOO.BAR WHERE FOO.BAR.BAZ='1234';

However, I just finished building my own PostGres and when I try to use it, I have to do stuff like this:

SELECT * FROM "FOO"."BAR" WHERE "FOO"."BAR"."BAZ" = '1234';

Is this a Postgres thing? Or did I compile it wrong? Or is it an option to create_db?

Thanks for your help
RDB