Dear Monks, I thought I had stumbled across a great module that would allow me to apply sql queries to a spreadsheet saved in csv format. The queries work well when the cells of the csv file contain text, but not when they contain numbers, producing the error message "Use of uninitialized value in concatenation (.) or string at"

I have attached the relevant bits of my code below. Any help would be hugely apprec1ated. Thank you

# Connect to the database, (the directory containing our csv file(s))
  my $dbh = DBI->connect ("dbi:CSV:", undef, undef, {
      f_dir                       => ".",
      f_ext                       => ".csv",
      f_encoding                  => "utf-8",
      RaiseError                => 1,
      }) or die $DBI::errstr;
    
# Output the name and contact field from each row
  my $sth = $dbh->prepare (qq(select * from newCsv.csv));
  $sth->execute;
  while (my $row = $sth->fetchrow_hashref) {
      print "row = $row->{sid} \tgender = $row->{gender} \t\tgenotype 
+= $row->{name} \n"; ## this works well all cells contain only text
      print "test group = $row->{tGroup} \n"; ## creates 'use of unini
+tialized value in concatenation (.)... etc. tGroup contains numbers
  }
 
 $sth->finish();
 $dbh->disconnect();

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In reply to dbi::CSV works with text, but not numbers by Sandy_Bio_Perl

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