Subject says it all. The book does not hint at it but it looks like itdoes.
To answer my own question, this seems to be a symptom of an unsorteddate/time column; aj assumes it is sorted.
Yes, the second table needs to be sorted. See also the discussion insection 9 of http://kx.com/q/d/q.htm .On Mar 17, 7:15?am, annakh7 <anna…> wrote:> To answer my own question, this seems to be a symptom of an unsorted> date/time column; aj assumes it is sorted.</anna…>