There was an issue with earlier versions of Derby, that was supposed to have been fixed.

 

Even so, the performance of the IN clause where you have a large list is going to be an issue in most databases.

 

 


From: Peter Ondruška [mailto:peter.ondruska@gmail.com]
Sent: Sunday, October 05, 2008 3:12 PM
To: Derby Discussion
Subject: Re: Perfroamnce of IN ( ... list ... ) statements

 

What Derby version is it?

How does it perform if you re-create index on foo_id column?

 

p. 

On Sun, Oct 5, 2008 at 10:07 PM, Tim Dudgeon <tdudgeon@informaticsmatters.com> wrote:

If I run a statement like this is Derby:
SELECT COL1, COL2 FROM FOO WHERE FOO_ID IN ( 1, 31, ..... 4567)
it seems unexpectedly slow. Its actually faster to retrieve each row individually using a for loop that it is to use the IN ( ..  list ... ) clause. This seems strange.

Thanks

Tim