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Altering a primary Key Constraint which is referred by foreign Key Constraint.

  • September 13, 2017 at 6:49 am

    #349121

    Hi,

    I have a table Item with a Primary Key Constraint. A foreign key is created with 6 other tables referring Item's Primary key. I want to include another column in the Primary Key. I tried disabling the foreign key and primary key but i am not able to drop the primary key from the Item table.

    Can someone please suggest how to alter the primary without dropping the foreign key? Is that possible?

  • September 13, 2017 at 7:06 am

    #1959235

    nope, you have to drop the foreign keys that reference the PK, then drop the PK, then recreate a new PK and -the foreign keys so they now feature the new two column constraint.
    if you wanted the foregin key to reference just one part of the  new-multi column PK, then you need a unique constraint on that column for the FK to attach to.

    Lowell

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