Included in the distribution is the
- 'User Guide' for PostgreSQL,
- 'Implementation Guide' detailing database internals of PostgreSQL.
- Online manuals.
- Online manuals in HTML formats.
- Also manuals in Postscript format for printing hard copies.
Reference docs: Useful reference textbooks :
- "Understanding the New SQL: A Complete Guide" - by Jim Melton and Alan R.Simon
Morgan Kaufman Publisher is one of best SQL books.
- "A Guide to THE SQL STANDARD" - by C.J.Date Addison-Wesley Publishing company is also a good book
Hundreds of other titles on SQL are available! Check out a bookstore.