Hello, I think this question is OT but nevertheless. I don't know where to put my question elsewhere. I use Zope as some kind of 'frontend' for an relational database. I want to use the database to store laws. The idea is to retrieve articles with "SELECT FROM law WHERE article_number >= x and article_number <= y". Unfortunately not all law articles are numbered with 1, 2, 3, etc. If they were I could define article_number as integer. But some articles are numbered with 1, 2, 2a ... 13ab etc. When I define the article_number as char and I retrieve I get a result with an sorting order like this: 1,10,11,11a,11b,12, 13ab ... 2a, 20, 21,21a. I could not find a database who supports "natural sort". Has someone an idea to work around this problem with Zope? Any suggestions would be appreciated.