× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. MIDRANGE-L
  3. January 2013

Re: Uniquely identifying a record in SQL without a unique key?

Another experiment:

I created a non-keyed copy of VIEWCUS, then deliberately created an exact duplicate record.

Then, I opened the file in Squirrel, and changed one of the pair of identical records.

Squirrel gave me a warning that the change would affect both records, then, when I told it to proceed, it did change both records.

I'm not sure, but I think that's telling me that Squirrel doesn't hold an open cursor on the file, but instead does an UPDATE with a WHERE clause built from the record being updated.

I definitely need a good JDBC tutorial, one that gets into the ins and outs of result sets and their cursors.

(And if there are any Squirrel SQL experts here, would anybody happen to know of a way to see what requests Squirrel is actually sending?)

As an Amazon Associate we earn from qualifying purchases.

This thread ...
Follow-Ups:
Replies:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.