[mso] Re: Access 2002 Doesn't Link Null Data
- From: Ray Shapp <ras45@xxxxxxxxxxxxx>
- To: mso@xxxxxxxxxxxxx
- Date: Fri, 16 Nov 2007 02:26:17 -0500
Hi Cathy,
Thank you for the reply.
<<What is the recordsource for the existing query? >>
The existing query extracts a subset from a single master table which contains
records for all the people who have been members of our club since data was
computerized about twenty years ago. The existing query merely extracts a
single record for each currently active member. All fields in the master table
are represented in the Active Members subset.
<<Is there a primary key for an ID in the master table?>>
No. The combination of Last_Name and First_Name fields uniquely identifies
each member. We also have a field for middle initial, but I don't think it has
ever been needed to resolve duplicates. We have added "Jr" to First_Name entry
for a few individuals.
<<...more info on the master data table structure it would be helpful. >>
A single record containing about 500 bytes in 30 fields of data contains all
the info pertinent to a single individual. We have about a thousand such
records, but only a little over 200 records pertain to currently active
members.
<<Are the links in this new query one to one or one to many? >>
The links are one to one. I join Last_Name in Active Members query to Last
Name in the new query. I similarly join First_Name.
<< I was taught to build my queries from left to right,>>
I'm not sure what significance there is in the left/right placement in my
case. How does it matter whether the master table is to the left or right of
the Active Members query? In my case I have placed the Active Members query to
the left of the master table. Would my results differ if I reversed the order?
Thanks for the help.
Ray Shapp
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