5 description => "Add contraints to the linktracker table",
8 my ($dbh, $out) = @$args{qw(dbh out)};
10 unless( foreign_key_exists( 'linktracker', 'linktracker_biblio_ibfk' ) ) {
11 $dbh->do(q{ UPDATE linktracker SET biblionumber = NULL WHERE biblionumber NOT IN (SELECT biblionumber FROM biblio) });
12 $dbh->do(q{ ALTER TABLE linktracker ADD CONSTRAINT `linktracker_biblio_ibfk` FOREIGN KEY (`biblionumber`) REFERENCES `biblio` (`biblionumber`) ON DELETE SET NULL ON UPDATE SET NULL });
15 unless( foreign_key_exists( 'linktracker', 'linktracker_item_ibfk' ) ) {
16 $dbh->do(q{ UPDATE linktracker SET itemnumber = NULL WHERE itemnumber NOT IN (SELECT itemnumber FROM items) });
17 $dbh->do(q{ ALTER TABLE linktracker ADD CONSTRAINT `linktracker_item_ibfk` FOREIGN KEY (`itemnumber`) REFERENCES `items` (`itemnumber`) ON DELETE SET NULL ON UPDATE SET NULL });
20 unless( foreign_key_exists( 'linktracker', 'linktracker_borrower_ibfk' ) ) {
21 $dbh->do(q{ UPDATE linktracker SET borrowernumber = NULL WHERE borrowernumber NOT IN (SELECT borrowernumber FROM borrowers) });
22 $dbh->do(q{ ALTER TABLE linktracker ADD CONSTRAINT `linktracker_borrower_ibfk` FOREIGN KEY (`borrowernumber`) REFERENCES `borrowers` (`borrowernumber`) ON DELETE SET NULL ON UPDATE SET NULL });