alter table book add constraint Fk_Relationship_3 foreign key(catalogid)
references catalog(catalogid) on delete restrict on update restrict;
ERROR 1022(23000):Can't write;duplicate key in table '#sql-538_43'
如何解决问题?
alter table book add constraint Fk_Relationship_3 foreign key(catalogid)
references catalog(catalogid) on delete restrict on update restrict;
ERROR 1022(23000):Can't write;duplicate key in table '#sql-538_43'
如何解决问题?