Hi,

I have a mysql database that keeps track of user entries.

Not all of the user entries are compulsory and so have default values if the user doesn't enter anything. I am using position markers in my insert statements because I read somewhere that this is safer than just variables. A table for example may look like this: 
CREATE TABLE foo (
    id TINYINT UNSIGNED NOT NULL AUTO_INCREMENT,
    bar VARCHAR(50),
    blah VARCHAR(50) DEFAULT 'NA',
    PRIMARY KEY (id)
);

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I am then trying to insert into the table with the following: 
sub add_foo {

   my ($bar, $blah) = @_;
   
   my $sth = $dbh->prepare('INSERT INTO foo SET '
                            . 'bar = ?, '
                            . 'blah = ?)
        or die "Couldn't prepare statement: " . $dbh->errstr;

    $sth->execute($bar, $blah)
        or die "Couldn't execute statement: " . $sth->errstr;
    
    my $id = $dbh->last_insert_id(undef, undef, qw(foo id))
        or die "no insert id?";
    
    return $id;
}

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If the user didn't enter anything for 'blah', how do I create the sql statement so that it will populate the field with 'NA'? Many thanks, Zettai.

In reply to Using MySQL table's default values upon insert by Zettai

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