use Modern::Perl; return { bug_number => "30451", description => "Update FK constraint on aqorders.subscriptionid to ON DELETE SET NULL", up => sub { my ($args) = @_; my ( $dbh, $out ) = @$args{qw(dbh out)}; if ( foreign_key_exists( 'aqorders', 'aqorders_subscriptionid' ) ) { $dbh->do(q{ ALTER TABLE aqorders DROP FOREIGN KEY aqorders_subscriptionid }); } $dbh->do(q{ ALTER TABLE aqorders ADD CONSTRAINT `aqorders_subscriptionid` FOREIGN KEY (`subscriptionid`) REFERENCES subscription(`subscriptionid`) ON DELETE SET NULL ON UPDATE CASCADE }); say $out "Update FK constraint on subscriptionid"; }, };