In this post, you’ll learn about the error message -624 table table name already has a primary key in the IBM DB2 database , the reason why it occurs along with the solution to fix it
IBM DB2 Error Message
-624 table table name already has a primary key
Reason for the Error
The code is used to report that a primary key cannot be defined in an ALTER TABLE statement because the indicated table already has a primary key.
Solution
A table cannot have more than one primary key.