[AccessD] Comparing tables question

I have two tables both of which have the fields Pattern and Well. The
field pattern will appear several times with a different corresponding
well. I need to compare each unique pattern well combination in table1
to see if the same unique combination exists in table2 and output a list
of the ones that have no match. I am at a loss of how to do this. Thanks
for ideas.

 

Chester Kaup

Engineering Technician

Kinder Morgan CO2 Company, LLP

Office (432) 688-3797

FAX (432) 688-3799