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Dropping a Primary Key constraint

buggleboy007Apr 16 2018 — edited Apr 18 2018

Hi all,

I am trying to propose a solution for a table which has a column that is PRIMARY KEY(actually it has set of 3 columns that make up the PRIMARY KEY) and the same column is a FOREIGN KEY. This is causing an issue when this column has a NULL value (as a trigger is getting fired and this NULL value is becoming a show stopper)

My proposed solution is to drop the PRIMARY KEY and recreate the PRIMARY KEY with the other existing column. This will take care of the issue (IMO). But before I propose the solution, I would like to know the what could be the impact. One is :

a) DROPPING PRIMARY KEY does not drop the UNIQUE INDEX(https://community.oracle.com/thread/369159)