I picked my SQL in the street, so it's kind of rudimentary.  Maybe 
someone can point me in the right direction.

Here's a table

document  characteristic
1         a
1         b
1         d
2         a
2         d
2         e
3         a
3         b

I want to SELECT the document(s) that match all of a set of 
characteristics.  

Say I want all documents with characteristic a AND b:  This should return 
documents 1 and 3

Likewise, requesting characteristics a AND d returns documents 1 and 2

Say I request characteristics b AND d:  I should get no rows.

thanks

Bill Conlon

To the Point
345 California Avenue Suite 2
Palo Alto, CA 94306

office: 650.327.2175
fax:    650.329.8335
mobile: 650.906.9929
e-mail: mailto:[EMAIL PROTECTED]
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