sunny82
asked on
Cannot put extra delimiter after fetching null value in perl
Hi,
I have a problem. In this code below, I am getting a “semi-colon” delimited csv file from a table. But if last column has null value, it is not putting that extra semi-colon at the end.
So we are getting results as (D is null here in database)
A;B;C;D
1;2;3;
instead of 1;2;3;;
Where am I going wrong??
--------------------------
my $sth1= $dbh->prepare($query) or die "Unable to prepare the statement";
$sth1->execute();
my $text_file = "$ENV{'DATA'}" . $run_date . "_" . "XYZ.dat";
open(FILE, "> $text_file") or die "Unable to open the file";
my $header=$sth1->{NAME};
print FILE join(";", @$header) . "\n";
while(my $row1=$sth1->fetchrow_arra
{
print FILE join(";", @$row1) . "\n";
}
close(FILE);
$sth1->finish;
--------------------------
I have a problem. In this code below, I am getting a “semi-colon” delimited csv file from a table. But if last column has null value, it is not putting that extra semi-colon at the end.
So we are getting results as (D is null here in database)
A;B;C;D
1;2;3;
instead of 1;2;3;;
Where am I going wrong??
--------------------------
my $sth1= $dbh->prepare($query) or die "Unable to prepare the statement";
$sth1->execute();
my $text_file = "$ENV{'DATA'}" . $run_date . "_" . "XYZ.dat";
open(FILE, "> $text_file") or die "Unable to open the file";
my $header=$sth1->{NAME};
print FILE join(";", @$header) . "\n";
while(my $row1=$sth1->fetchrow_arra
{
print FILE join(";", @$row1) . "\n";
}
close(FILE);
$sth1->finish;
--------------------------
farzanj
Nothing wrong. This is the way it is supposed to behave. Look carefully, even in the header, there are only 3 semi colons and nothing after the last column. So it is consistent and correct.
ASKER
Ok thank you. I am also getting a warning ----
Use of uninitialized value $row1 in join or string at XYZ.pl line 70.
(print FILE join line)
Is this also normal? What can I do to prevent this?
Use of uninitialized value $row1 in join or string at XYZ.pl line 70.
(print FILE join line)
Is this also normal? What can I do to prevent this?
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ASKER
Great many thanks :)