Importing and Updating Non-Duplicate Records from 2 Tables

Question

I need some help with the code to import data from one table
into another if it is not a duplicate or if a record has changed.
I have 2 tables, Members and NetNews. I want to check NetNews
and import non-duplicate records from Members into NetNews and
update an email address in NetNews if it has changed in Members. I
figured it could be as simple as checking Members.MembersNumber and
Members.Email against the existance of NetNews.Email and
Members.MemberNumber and if a record in NetNews does not exist,
create it and if the email address in Members.email has changed,
update it in NetNews.Email.
Here is what I have from all of the suggestions received from
another category last year. It is not complete, but I am stuck on
the solution. Can someone please help me get this code working?
Thanks!
<cfquery datasource="#application.dsrepl#"
name="qryMember">
SELECT distinct Email,FirstName,LastName,MemberNumber
FROM members
WHERE memberstanding <= 2 AND email IS NOT NULL AND email
<> ' '
</cfquery>
<cfquery datasource="#application.ds#"
name="newsMember">
SELECT distinct MemberNumber
FROM NetNews
</cfquery>
<cfif
not(listfindnocase(valuelist(newsMember.MemberNumber),qryMember.MemberNumber)
AND isnumeric(qryMember.MemberNumber))>
insert into NetNews (Email_address, First_Name, Last_Name,
MemberNumber)
values ('#trim(qryMember.Email)#',
'#trim(qryMember.FirstName)#', '#trim(qryMember.LastName)#', '#
trim(qryMember.MemberNumber)#')-
</cfif>
</cfloop>
</cfquery>
------------------

Answer 1

Dan,
My DBA doesn't have the experience to help with a VIEW. Did I
mention that these are 2 separate databases on different servers?
This project is over a year old now and it really needs to get
finished so I thought the import would be the easiest way to go.
Thanks to your help, it is almost working.
I added some additional code to check for a changed email
address and update the NetNews database. It runs without error, but
I don't have a way to test it right now. Can you please look at the
code and see if it looks OK?
I am also still getting an error on line 10 after the routine
runs. The line that has this code: "and membernumber not in
(<cfqueryparam list="yes"
value="#valuelist(newsmember.membernumber)#
cfsqltype="cf_sql_integer">)" even with the cfif that Phil
suggested.
<cfquery datasource="#application.ds#"
name="newsMember">
SELECT distinct MemberNumber, Email_Address
FROM NetNewsTest
</cfquery>
<cfquery datasource="#application.dsrepl#"
name="qryMember">
SELECT distinct Email,FirstName,LastName,MemberNumber
FROM members
WHERE memberstanding <= 2 AND email IS NOT NULL AND email
<> ' '
and membernumber not in (<cfqueryparam list="yes"
value="#valuelist(newsmember.membernumber)#"
cfsqltype="cf_sql_integer">)
</cfquery>
<CFIF qryMember.recordcount NEQ 0>
<cfloop query ="qryMember">
<cfquery datasource="#application.ds#"
name="newsMember">
insert into NetNewsTest (Email_address, First_Name,
Last_Name, MemberNumber)
values ('#trim(qryMember.Email)#',
'#trim(qryMember.FirstName)#', '#trim(qryMember.LastName)#', '#
trim(qryMember.MemberNumber)#')
</cfquery>
</cfloop>
</cfif>
<cfquery datasource="#application.dsrepl#"
name="qryEmail">
SELECT distinct Email
FROM members
WHERE memberstanding <= 2 AND email IS NOT NULL AND email
<> ' '
and qryMember.email NEQ newsMember.email
</cfquery>
<CFIF qryEmail.recordcount NEQ 0>
<cfloop query ="qryEmail">
<cfquery datasource="#application.ds#"
name="newsMember">
update NetNewsTest (Email_address)
values ('#trim(qryMember.Email)#')
where email_address = #qryEmail.email#
</cfquery>
</cfloop>
</cfif>
Thank you again for the help.