Fetch all rows of a ORACLE SQL query using PERL Script - oracle

Question

I need to fetch all rows from an oracle sql query and then loop through each rows using PERL.
Below is some sample data and table
create table t1 (col1 varchar2(30));
insert into t1 values ('row1');
insert into t1 values ('row2');
insert into t1 values ('row3');
insert into t1 values ('row4');
insert into t1 values ('row5');
commit;
i have written PERL script like below to fetch above table --
# connexion a la base
my $dbh = DBI->connect( 'dbi:Oracle:'.$dbname,
$dbusername,
$pass,
{ PrintError => 0,
RaiseError => 1
}
) || die "Erreur lors de la connexion: $DBI::errstr";
print ("Connexion à la base de données $dbname avec $dbusername OK \n");
$requete = "select col1 from t1";
$sth_sql = $dbh->prepare($requete);
$sth_sql->execute(#row);
#row=$sth_sql->fetchrow_array;
my $size = #row;
print $size;
#$first=#row[0];
#$sec=#row[1];
print $sec;
print $first;
foreach $script_name (#row) {
print "$script_name\n";
}
the above code is returning only one row and size of the array is showing only 1 element in it.
I need to fetch all fives rows and then loop through them one by one.
please suggest what i am missing here !!
I am using oracle database.
Thanks
EDIT :
I have made some changes and it is working fine now
$requete = "select col1 from t1";
$sth_sql = $dbh->prepare($requete);
$sth_sql->execute();
##row=$sth_sql->fetchrow_array;
$sth_sql->bind_columns(undef, \$script_name);
print $sec;
print $first;
while ($sth_sql->fetch()) {
$script_sql=$script_name.".sql";
print "$script_sql\n";
}

Answer 1

The ->fetchrow_array function is documented in DBI. There you'll see documented that you can either use it within a loop:
$sth = $dbh->prepare("SELECT foo, bar FROM table WHERE baz=?");
$sth->execute( $baz );
while ( #row = $sth->fetchrow_array ) {
print "#row\n";
}
to retrieve all rows sequentially, or that you can use the ->fetchall_arrayref method to retrieve the complete resultset in one go:
$sth = $dbh->prepare("SELECT foo, bar FROM table WHERE baz=?");
$sth->execute( $baz );
my $rows = $sth->fetchall_arrayref;
for my $row (#$rows) {
print "#row\n";
}