I am trying to find a way in SQL to get a list of all values that do
not exist in a field. As in...
Let's say I have a file that has a field "number". It's a 3-digit
field. I know that over 800 of the 999 possible (non-zero) values are
already used. I need to know which values are not used.
I suppose I could create a file of nothing but sequential numbers
from 1 to whatever, but I'm hard-headed and this really shouldn't be
Am I missing something obvious? I can probably get around this
particular issue, but I'd really like to have a new technique that I
can use in the future.