SQL Book

Hi everyone-
     I'm a newbie at PostgreSQL and wanted to learn
more about postgres.  What would be a good book to
read up on for learning postgreSQL or SQL in general.
Amazon refers me:
The Essence of SQL : "A Guide to Learning Most of SQL
in the Least Amount of Time ~ Usually ships in 24
hours
David Rozenshtein, Tom Bondur (Editor) / Paperback /
Published 1998 "

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