Hi, (zope 2.5.1, python 2.1.3, testing on win2000) A couple of areas of a site I am developing requires the catalog to be quried twice and the results combined. What is the most eficient method to combine these results while ensuring the complete results still follow the sort_on and sort_order sent in the catalog query? I have tried two methods: 1. Add the two results and re-sort the lot using ... all_results.sort( lambda x,y: getattr(x, sortOn), getattr(y, sortOn)) ... (sortOn passed in to the script) 2. Find which results is the smallest and insert these one by one into the larger results. (Similar code to something I came across in the zope pyhton code on my system, forget the name of it at the moment). Using the following code to find the right place in the larger results to insert the current item from smaller results. ... getattr(results[mid], sortOn) < getattr(y, sortOn) ... Both methods are not very fast. Is there a better way to do this? Thanks for any help. Richard __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com