Keep getting this error when Upgrading from 4.4.14 to 4.6.2 directly. I am upgrading based on the civicrm documentation.
Seems like civicm_mailing_abtest has some error. But I have checked I did not have this table in 4.4 version and it was created during the upgrade process.
How to deal with it?
DB Error: unknown error in unknown on line unknown
nativecode=1060 ** Duplicate column name 'created_id'
ALTER TABLE civicrm_mailing_abtest ADD COLUMN
created_id int unsigned