I always run the selection criteria through SELECT first and verify
the results
before updating. Does not matter the database (DB2 with or without
journaling/commitment control, SQL Server, etc.).

Doesn't always help. You may have to subtly change the query to make it
an update instead of a select. Now, if you're journaling you do the
select, determine that 44 rows should be updated, start a transaction,
do the update, see that 440 rows were updated, say "ooops" and rollback.
No harm no foul. Or commit if the right number of rows were updated.

-Walden


This thread ...

Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2019 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].