Re^4: Group by from array

Just some small tweaks to make it work.

#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11146593
use warnings;

my @mapped = ("Account Entity Unit Jan Feb Mar",
            "Account01 Entity01 Unit01 1 2 3",
            "Account01 Entity01 Unit01 4 5 6",
            "Account01 Entity01 Unit01 7 8 9",
            "Account02 Entity02 Unit02 10 11 12");

my %group_by;
my @titles = split ' ', shift @mapped;

foreach (@mapped) {
    my %hash; @hash{ @titles } = split;   #don't get it NOTE makes a h
+ash with titles as keys and fields of current line as values
    for(qw(Jan Feb Mar)){
        $group_by{join ' ', @hash{qw(Account Entity Unit)}}{ $_ } += $
+hash{ $_ };    #don't get it either NOTE does the SUM function that y
+our SQL is doing
    }
}
use Data::Dump 'dd'; dd \%group_by;
[download]

Outputs:

{
  "Account01 Entity01 Unit01" => { Feb => 15, Jan => 12, Mar => 18 },
  "Account02 Entity02 Unit02" => { Feb => 11, Jan => 10, Mar => 12 },
}
[download]

Comment on Re^4: Group by from array Select or Download Code

Replies are listed 'Best First'.
Re^5: Group by from array by tybalt89 (Monsignor) on Sep 02, 2022 at 09:06 UTC
Same with "nicer" printout. #!/usr/bin/perl use strict; # https://perlmonks.org/?node_id=11146593 use warnings; my @copy = my @mapped = ("Account Entity Unit Jan Feb Mar", "Account01 Entity01 Unit01 1 2 3", "Account01 Entity01 Unit01 4 5 6", "Account01 Entity01 Unit01 7 8 9", "Account02 Entity02 Unit02 10 11 12"); my %group_by; my @titles = split ' ', shift @mapped; foreach (@mapped) { my %hash; @hash{ @titles } = split; #don't get it NOTE makes a h +ash with titles as keys and fields of current line as values for(qw(Jan Feb Mar)){ $group_by{join ' ', @hash{qw(Account Entity Unit)}}{ $_ } += $ +hash{ $_ }; #don't get it either NOTE does the SUM function that y +our SQL is doing } } #use Data::Dump 'dd'; dd \%group_by; # if you want a "nice" printout open my $incolumns, '\|-', 'column -t' or die; print $incolumns "$copy[0]\n", "$copy[0]\n" =~ s/\w/-/gr; # separator +line foreach( sort keys %group_by ) { print $incolumns "$_ @{ $group_by{ $_ } }{qw(Jan Feb Mar)}\n"; } close $incolumns; [download] Outputs: `Account Entity Unit Jan Feb Mar ------- ------ ---- --- --- --- Account01 Entity01 Unit01 12 15 18 Account02 Entity02 Unit02 10 11 12` [download]	[reply] [d/l] [select]
Re^6: Group by from array by LanX (Saint) on Sep 02, 2022 at 10:34 UTC
> `open my $incolumns, '\|-', 'column -t' or die;` https://www.man7.org/linux/man-pages//man1/column.1.html Oh ... you are a sinner against the Perl dogma! :( "Do not needlessly shell out" says the lord and `format` is his prophet. No dessert after meal for one week! ;-) Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery}	[reply] [d/l]