[Zope] zsql puzzler

I have a zsql method that is acting rather oddly. My query is something like this- select girl,type,sum(qty) from girlscout_cookie_sales group by girl,type If I enter it directly in my console, I get a list of about 40 lines. If I paste that query into a zsql method, I only get 21 results and no error. The results are not being cached. I am not displaying 20 results at a time. Where are my results? I'm stumped as to how to begin troubleshooting this.