/ Given a table having orderid and timestamps (one or two of them
/ per orderid), want to calculate the difference in the timestamps
/ for each order id and sort in descending order by the difference.

order: `a`b`a`c`c`b`d;
time: 09:03:06.000 09:03:23.000 09:04:01.000 09:05:01.000 09:06:01.000 09:07:01.000 09:03:23.010;

latency:([]order; time);
show latency

ravi:{[arr]
  :max(arr) - min(arr);
  }

highlats: select mylat: ravi[time] by order from latency
show highlats

(`mylat xdesc `highlats)
show highlats


save `:highlats.csv; / to write a csv file
save `:highlats / save in binary. More compact