I have got hold of a new book titled "Sybase Transact SQL Guidelines Best Practices", ISBN 0975969307. It is published by Sybase. Before I had to rely on the out of date Sybase Transact SQL books which covered microsoft or older versions of Sybase. it is completely up-to-date (Sybase 12.5.3), comprehensive and full of practical tips on how to write efficient queries. I recommend it to everyone. You can get it from or from Amazon