Alternative for a where in with more than 1000 values?

I often need to generate log files where I select values from a table.  Sometimes there are thousands of values I need to look for.  Since a IN clause is limited to 1000 values I use the following code:

SELECT column1, column2

  FROM table1

WHERE ( column1 IN ('1','2',...'990')

OR column1 IN ('991','992',...,'1800','1801)

OR column1 IN ('1802','1803',...,'2700'));

What I'm looking for is an alternative that is less cumbersome.

thanks,

Michael