Zeev
At 13:15 25/03/2003, Zak Greant wrote:
On Tue, Mar 25, 2003 at 01:50:17PM +0000, Matt Flaherty wrote: > Hi, > > I have a question for the authors of the mysql extension. I'm sure you > gentlemen are very busy, but I'd appreciate your insight if you can > spare a moment. I'm developing a stand-alone php application running in > an infinite loop from the command line interface. A mysql database is > polled continually for new rows to deal with. The same query is executed > several times in one second. I've noticed that whether or not a query > resource is freed the next query identifier returned from mysql_query() > is ++ the last one. I'm sure this is by design and governed by the mysql > driver. Naturally I'm concerned about integer overflow when the the > application has been running uninterrupted for a very long time. I don't > think I can wait around while a test script runs to see what happens > after 4,294,967,295 is exceeded though! Can anyone tell me with > certainty or hazard a guess what might happen here? I thank you very > much for your time.
The query that generates an auto_increment value larger than the largest value allowed for the column will fail with error 1062 (Duplicate entry 'xxx' for key 1)
> Matt > > ps - I'm doing this through PEAR::DB::mysql
I am not exactly sure how PEAR::DB will propagate this error through its error handling interface.
An easy way to test this is to create a temporary table that has a TINYINT as its auto_incrementing primary key, fill the table up and then watch to see what breaks.
Cheers! --zak
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