Oracle: copy row while updating one field

Question

Please note: I am asking the question I want answered. I know this question means the database is set up poorly. So I will vote down any answers that suggest changing

Answer 1

If the number of columns is large, you could copy the data you want into a temporary table, alter the data in the temporary table as you wanted, then copy the contents of the temporary table back into the original, and delete the temporary table.