CouchDB "Joins" - Christopher Lenz

Obvious to Damien, but not at all obvious to the rest of us: it's fairly simple to make a view that includes both the content of the blog post document, and the content of all the comments associated with that post. The way you do that is by using complex keys. Until now we've been using simple string values for the view keys, but in fact they can be arbitrary JSON values, so let's make some use of that: