Sorry, I don't mean to be confusing. I guess I should clarify what I am trying to accomplish. I need to find the invalid dates and update them to be valid. The table is still in use and new rows added daily. This table has no keys on it and I can't alter it to create a key. I am afraid that if I tried to make up a key using one or more columns from the table that it wont be unique. I guess I know how to find the invalid dates I just need help on how to fix them. Old school was to use RRN on a table without any keys and use the relative record number to find the rows and update the column but I am lost on how to do it best on Teradata.
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