As Laurent_R said, your requirements have another dimension (or two), so my script won't work for this except for some of the basic ideas. You're probably going to want three hashes, one to collect per-hour values (%h) and one to collect per-minute value (%m), and one to collect database names (%db). Then you'll need to: 

for each line
  parse out the date-hour, date-hour-minute, database name, and speed
  add speed to $h{date-hour}{database name}
  add speed to $m{date-hour-minute}{database name}
  $db{database name} = 1 # put database name in hash

loop through sorted keys of %db
  print them as headers, formatted to fit what's coming below
loop through keys of %h (sorted if you want)
  print the key (the date-hour)
  loop through sorted keys of %db
    print $h{$key}{database name}
  print a newline

now do the same with the per-minute hash %m

[download]

Try coding that, and let us know if you need help.

Aaron B.
Available for small or large Perl jobs and *nix system administration; see my home node.

In reply to Re^3: Computing results through Arrays by aaron_baugher
in thread Computing results through Arrays by yasser8@gmail.com

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