Re: DB2 Auto-update TimeStamp

[Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>]

Matt

I can imagine a scenario when a program does an update, and there might 
not be a real change - do you check in your program for that, for every 
possibility? Yes, there are ways to simplify that, but it might not be 
something you want to code.

So it may or may not be bad coding practice - it depends, IMO.

Cheers
Vern

On 6/11/2014 9:09 AM, Matt Olson wrote:
> Why are you issuing an update on a database table when no updates have occurred?  That is terrible programming practice.
>
> -----Original Message-----
> From: Ricky Thompson [mailto:rickyt29@xxxxxxxxx]
> Sent: Wednesday, June 11, 2014 8:11 AM
> To: midrange-l@xxxxxxxxxxxx
> Subject: DB2 Auto-update TimeStamp
>
> I know you can add a timestamp to a table that automatically updates on insert and update.  But can you have it only update if there is a real change in the data? For example if a update is done to the table but no data changes I would like for it not to update the timestamp.  My guess is no it's not possible but thought I would ask.
>
>
> myTimeStamp TIMESTAMP NOT NULL GENERATED BY DEFAULT FOR EACH ROW ON UPDATE AS ROW CHANGE TIMESTAMP
> --
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