Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Sorry. I didn't mean for that to sound like a job request. I was more concerned with properly describing my needs that I was at formating my request for suggestions.

I have other scripts that calculate averages for these columns, and I will include that code here. I would like to use DBD::CSV on this, but lack the SQL experience to properly script this with out looping over and over in the file.
# Connect to the database, (the directory containing our csv file( +s)) my $dbh = DBI->connect("DBI:CSV:f_dir=.;csv_eol=\n;"); # Associate our csv file with the table name 'results' $dbh->{'csv_tables'}->{'results'} = { 'file' => "$CWD/$name"}; my $sth = $dbh->prepare("SELECT * FROM results WHERE 1=0"); $sth->execute; my @origcols = @{$sth->{NAME}}; my @cols; # = @origcols; shift @origcols; # Eliminate First Column foreach ( @origcols ) { push ( @cols , $_ ) unless /Bandwidth.*|MSTCPLoop.*/ ; # Remove + unwanted columns }; my $avgSQL = 'SELECT ' . join(', ', map { "avg($_) \n" } @cols ) . ' FROM results'; my @avgs = $dbh->selectrow_array($avgSQL); my %avgsHash; @avgsHash{ @cols } = @avgs; # uses a hash slice to populate %avgs +Hash for ( @cols ) { (my $changed = $_) =~ s/_/","/; printf STATS ("\"%s\",%f\n", $changed, $avgsHash{$_}); }

Honestly, I have only made a couple of attempts at this. I'm really stumped on how to format the SQL query. I think that is someone could point me in the direction the SQL query should look like, I'd be able to create it.

In reply to Re^2: Advances SQL calculations in CSV file by DrAxeman
in thread Advances SQL calculations in CSV file by DrAxeman

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (6)
    As of 2014-10-01 01:11 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (386 votes), past polls