Rename column in DB2

Question

I am trying to rename a column in one table where data already exists. But below is the error it is throwing.Please advice.

Syntax I tried

ALTER TABLE TPR.PRODUCT_FEATURE RENAME COLUMN PRODUCT_ID TO SERVICE_ID

Error:

[Error] Script lines: 23-23 ------------------------ DROP, ALTER, TRANSFER OWNERSHIP, REVOKE, or CREATE OR REPLACE on object type "COLUMN" cannot be processed because there is an object "PRODUCT_FEATURE_X01", of type "PRIMARY KEY", which depends on it.. SQLCODE=-478, SQLSTATE=42893, DRIVER=3.67.28

Looks me to, I need to drop and recreate is the only option. Please advice.

Solution

Drop the constraint:

ALTER TABLE TPR.PRODUCT_FEATURE 
    DROP CONSTRAINT PRODUCT_FEATURE_X01

Then alter your table:

ALTER TABLE TPR.PRODUCT_FEATURE RENAME COLUMN PRODUCT_ID TO SERVICE_ID

Then add new constraint:

ALTER TABLE TPR.PRODUCT_FEATURE
      ADD CONSTRAINT PRODUCT_FEATURE_X01
      PRIMARY KEY (insert,columns,here)