Need some direction

Question

Can someone point me in the right direction as to what type
of code I should try using? I need to add up some totals from
different tables in the database.
I have the following table structure, they have a lot more
fields but I will add the important ones:
Table: associates
Fields: id, assoc_id, initials, hourlyrate
Table: caseactivity
Fields: id, assoc_id, descripofservice, initials, hoursworked
I am outputing all of my data from "caseactivity", but at the
bottom of that I need to find a way to total up the hoursworked and
get a total cost for the hours worked based on the initials of the
person that entered the info. There will be different hourlyrate's
I need to pull from the associates table. So I'm not sure how to
add up. Any help in the right direction would be appreciated.
Thanks!

Answer 1

Thank you very much for the help, I think I see what the code
is doing now.
I changed the code to this and I get an error:
<cfquery name="qinitials" datasource="mydb">
SELECT * FROM associates WHERE assoc_id = #session.assoc_id#
</cfquery>
<cfquery name="qtime" datasource="mydb">
select hourlyrate, initials, sum(hoursworked) * hourlyrate as
totalcost
from associates a join caseactivity c on a.assoc_id =
c.assoc_id
where initials = #qinitials.initials#
</cfquery>
Error:
Column 'initials' in field list is ambiguous
26 : where initials = #qinitials.initials#