How to produce a formatted date string in Q/KDB?
<p>How can one produce an ISO date string "yyyy-MM-dd" from a Q date type? I looked at concatenating the various parts but am not even able to get the day/month, e.g. <code>d:2015.12.01;d.month</code> prints <code>2015.12</code>, i.e. more than just the month.</p>