Just build the structure instead of printing the values obtained from the database. I used SQLite to test: 
#! /usr/bin/perl
use warnings;
use strict;

use DBI;
use Data::Dumper;

my $dbfile = '1.db';
my $db = 'DBI'->connect("dbi:SQLite:dbname=$dbfile", q(), q());
END { unlink $dbfile }

$db->do('CREATE TABLE text (id INT, line_n VARCHAR, word VARCHAR, word
+_position INT)');

my $insert = $db->prepare('INSERT INTO text VALUES(?, ?, ?, ?)');
{   no warnings 'qw';
    $insert->execute(@$_) for [qw[1  a1 Lorem        1]],
                              [qw[2  a1 ipsum        2]],
                              [qw[3  a1 dolor        3]],
                              [qw[4  a1 sit          4]],
                              [qw[5  a1 amet,        5]],
                              [qw[6  b2 consectetuer 1]],
                              [qw[7  b2 adipiscing   2]],
                              [qw[8  b2 elit.        3]],
                              [qw[9  c3 Phasellus    1]],
                              [qw[10 c3 non          2]],
                              [qw[11 c3 erat         3]];
}

[download]

Now the real work: 

my $select = $db->prepare('SELECT line_n, word, word_position FROM tex
+t');
$select->execute;
my $text;
while (my ($line, $word, $pos) = $select->fetchrow_array) {
    $text->{$line}[$pos - 1] = $word;
}
print Dumper($text);

[download]
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

[download]

In reply to Re: Fetching data from DB and complex data structures by choroba
in thread Fetching data from DB and complex data structures by frasco

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