This is kind of a newbie question.

I am collecting statistics from a database for data profiling.
I have created a 4 deep hashes within hashes to hold those stats, as such:
$a={NUM_NULL => 0,
    DISTINCT => 150,
    NUM_ROWS => 2000};
$b={PRO_NUMBER => \%a};
$c={AC_SHIPMENT => \%b};
%Profileshoh = (IC_STAGE => \%c);

[download]

While I have good success obtaining the statistics, I am only getting the last value loaded into the hash structure back when I attempt to print it out.

I suspect my problem is in the loop where I am loading the data. I think I may be re-defining the whole hash at that point, but I can't find an example that shows me what I want to do.

code after readmore 
#!/usr/bin/perl -w
use DBI;

$dbh = DBI->connect("dbi:Oracle:XXXX","XXXXXX","XXXX",
                                { AutoCommit => 0,
                                  RaiseError => 1,
                                 PrintError => 1 })
                        or die "can't connect to database:",
                        $DBI::errstr, "\n";
$sth = $dbh->prepare("select 'IC_STAGE', t.table_name, column_name
  from user_tables t, user_tab_columns c
  where c.table_name = t.table_name
   AND t.table_name = 'AC_SHIPMENT'
   AND column_name in ('ACT_DELIVERY_TSP', 'CONS_NATL_ACCT_NBR',
                     'PICKUP_UNIT_ID')");
$sth->execute();

while (@row = $sth ->fetchrow_array())  {
    push @ListoTabCols, [@row];
}

$dbh ->disconnect();

print "disconnected\n";

for $i ( 0 .. $#ListoTabCols ) {
    print "reconnecting\n";
    $dbh = DBI->connect("dbi:Oracle:XXXX","XXXX","XXXX",
                                { AutoCommit => 0,
                                  RaiseError => 1,
                                 PrintError => 1 })
                    or die "can't connect to database:",
                    $DBI::errstr, "\n";
    $prow = $ListoTabCols[$i];
    print "row $i : $prow->[0] $prow->[1] $prow->[2]\n";
    @returno = $dbh->selectrow_array("select min($prow->[2]) from $pro
+w->[1]");
    
    $dbh ->disconnect();
    print "disconnected\n";
# HERE IS THE INSERT INTO THE HASH *************
    print "returned value: $returno[0]\n";
    %Profileshoh = ($prow->[0] => {
        $prow->[1]=>{
            $prow->[2]=>{
                MIN_VALUE=>$returno[0]
            }
        }
    })
}

while ( ($schemata, $tablas) = each %Profileshoh ) {
    print "$schemata: ";
    while ( ($tabla, $colums) = each %$tablas ) {
        print "$tabla: ";
        while ( ($colum, $measures) = each %$colums ) {
            print "$colum: ";
            while ( ($measure, $value) = each %$measures ) {
                print "$measure = $value ";
            }
        }
    }
    print "\n";
}

exit;

[download]

In reply to insert data into Nested Hash by poqui

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