The great SQL ColdFusion Auto Increment fiasco

Question

Hello all and thanks in advance for your help. I am
working on an Insert Record page using ColdFusion 7, Dreamweaver 8
and SQL Server 2000.
The SQL DB has a table called Articles. The table Articles
has a Primary Key field called ArticleID which is set to a type of
"Numeric, Identity:Yes, Seed:1, Increment:1" and no Null allowed.
I am getting an error message of:
Variable
PAGENUM_RSARTICLES is undefined.
The error occurred in
D:\Inetpub\guardyourself\backend\article_add.cfm: line 107
105 : </cfquery>
106 : <cfset MaxRows_rsArticles=10>
107 : <cfset
StartRow_rsArticles=Min((PageNum_rsArticles-1)*MaxRows_rsArticles+1,Max(rsArticles.Record Count,1))>
So. How do I get the ArticleID field on the CF page to see
what the last SQL row shows for an ArticleID... and then add one?
I'm stumped. Any help you can provide would be greatly appreciated.
Code for the page in question is as follows or you can just go to :
http://www.guardyourself.org/backend/article_add.cfm

Answer 1

I think there may be a little confusion about what a
uniqueidentifier field type is. You're talking about two separate
concepts as though they are one. To create a field which
"auto-increments" in SQL Server, you need to create the field as a
numeric type and then specify that the field is an identity field
(you can also specify the start and increment values). On insert,
SQL Server will assign values to this field based on the criteria
you supplied. If you do this, you will typically want to omit the
value and field from your ColdFusion inserts as you have described
below.
What you have done instead is to create the field as a
uniqueidentifier which requires a GUID value to be stored there.
You cannot "increment" a GUID. The GUID for new records must either
be generated by SQL Server (using the newID() function) or
externally in your code. You must pass this value on insert from
ColdFusion.
Hope this helps.
Adam