Trigger updating

*/ if update (title_id) and datename(dw, getdate()) in ("Saturday", "Sunday") begin rollback transaction print "We do not allow changes to " print "primary keys on the weekend." end.The example prevents updates to the primary key on weekends, and prevents updates to the price or advance of a title, unless the total revenue amount for that title surpasses its advance amount.

A primary key is the unique identifier for its row and for foreign-key rows in other tables.

Generally, you should not allow updates to primary keys. create trigger cascade_utrig on titles for update as if update(title_id) begin update titleauthor set title_id = inserted.title_id from titleauthor, deleted, inserted where deleted.title_id = titleauthor.title_id update roysched set title_id = inserted.title_id from roysched, deleted, inserted where deleted.title_id = roysched.title_id update salesdetail set title_id = inserted.title_id from salesdetail, deleted, inserted where deleted.title_id = salesdetail.title_id end An attempt to update a primary key should be taken very seriously.


  1. Pingback:

  2. eric   •  

    with fat girls chubby webcam Live sex chat with the hottest webcam girls on our high quality live sex cams & make your own sex show featuring: BBW Free Plumper Xxx Chubby slut masturbating hard on webcam.

  3. eric   •  

    She does the heavy emotional lifting so that Harry can continue to Hero all over the place and Ron can continue to sidekick. At the book’s start, Lily hopes to secure her future by marrying the wealthy but criminally dull Percy Gryce.

  4. eric   •  

    In fact, the CMS portion and every other addon to Silver Stripe are nothing more than modules added onto the framework, which lends itself to being highly extensible.

  5. eric   •  

    It is conducted by a civil official rolex swiss replica watches because marriages conducted by a religious authority are considered invalid.

  6. eric   •  

    Cybersex can occur either within the context of existing or intimate relationships, e.g.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>