Postgresql replication book review

http://www.packtpub.com/postgresql-replication/book

Recently I got book about postgresql replication  for review .
This book is great.
It describes different replication methods available in postgres in very easy way.
Besides that, it describes how replication mechanisms work, what you should know about designing database and many other aspects related to databases.
The book contains examples which can be used to one's practice.
In this book there are usefull things not only for database administrator but also for regular user who wants to know better how it works. 

Move table to another tablespace in Postgresql

dbtest# \t
dbtest# \o dbtest_tablespace.txt
dbtest# select 'alter table '||tablename||' set tablespace temporary_tablespace;' from pg_tables where tablename like 'example%';
dbtest# select 'alter index '||indexname||'  set tablespace temporary_tablespace;' from pg_indexes where tablename like 'example%';
dbtest# \i dbtest_tablespace.txt