use Modern::Perl; return { bug_number => "31569", description => "Add primary key for import_biblios", up => sub { my ($args) = @_; my ($dbh, $out) = @$args{qw(dbh out)}; unless( primary_key_exists('import_biblios') ){ $dbh->do(q{ALTER TABLE import_biblios ADD PRIMARY KEY (import_record_id)}); say $out "Added primary key to import_biblios table"; } }, };