>...where I can read about all select commands for TSM?

Well, there is only one Select command.  :-)  The Admin Ref manual has
the basics.  The ADSM/TSM Technical Guide redbooks carry a perpetual
appendix covering TSM SQL.   Near the bottom of
http://people.bu.edu/rbs/ADSM.QuickFacts
I keep a list of web sites that I have found useful for SQL usage.
Always remember that SQL for the TSM database is very restricted,
and often involves a lot of overhead in terms of db work space and
execution time.

  Richard Sims, BU