$sth->fetchrow_array () returns what it indicates: a list not a scalar

If you use bind_columns () (A GOOD CHOICE!), the call should be fetch_arrayref (), not fetch_array ()

Use UNIQUE or DISTINCT as already suggested if you want just a single value

or, remember what you saw:

$dbh->{RaiseError} = 1;
my $sth = $dbh->prepare (qq;
    select tax_id
    from   gene2acc
    where  genomic_ac_ver = '$ref';
    ); # qq;; is a nice way to make cut-n-paste to sql easier
$sth->execute;
my $tax_id;
$sth->bind_columns (\$tax_id);
my %seen;
while ($sth->fetch) {
    $seen{$tax_id}++ and next; # Only use first occurance
    print "Entering taxID_format with $tax_id\n";
   #taxID_format ($tax_id);
    }
keys %seen or print "No records matched for $ref\nn";

[download]

Enjoy, Have FUN! H.Merijn

In reply to Re: dbi retieve single col value by Tux
in thread dbi retieve single col value by Anonymous Monk

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