I've been writting reports for almost 2 years now, and I still don't know
what an Adhoc query or report is. I've looked at my class texts (ok, they
are old), and other sources, but I can't find a darn definition!

Would anybody care to enlighten me? ;-)

Hector Sosa, Jr

From http://www.m-w.com/cgi-bin/dictionary

Main Entry: 2ad hoc
Function: adjective
Date: 1879
1 a : concerned with a particular end or purpose <an ad hoc investigating
committee> b : formed or used for specific or immediate problems or needs
<ad hoc solutions>
2 : fashioned from whatever is immediately available : IMPROVISED <large ad
hoc parades and demonstrations -- Nat Hentoff>

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Typically, when someone refers to an ad hoc report or query they are
referring to something that is created for one-time (or limited) use.
--
Paul Little, Senior Programmer/Analyst
SVi Retail Systems
San Diego, CA

Mr. Webster notwithstanding, in the context you describe the word it  is
synonymous with 'User Defined'. Adhoc queries are queries designed (not just
executed) by the end user at run time. This means more than simply accepting
an argument in order to execute a pre built query. In a similar manner, adhoc
reports are reports designed (not just executed) by the end user. In general,
users like to be able to define their own quries and reports, especially if
the users are charged with maintaining the information in the database.