The way I understood the problem is that there are multiple fields that needed to be converted. Would have had to load the with many aliases to get the proper linking.
I have a table of individuals. In the positions table I have, currently only, 10 different positions. To list the "Who's responsible" list, I have to link the positions table to the names table 10 times. Can't have multiple links to the same table.
And if I understood correctly, field1, field2, ... fieldn all have values to be converted to Y/N/U.