Graham Leggett <minfrin(at)sharp(dot)fm> writes:
> Any idea what solution I can use to fix this?
Find the row (or rows) containing the bad value, and delete or update
it/them. It's possible that this is just one symptom of a data
corruption problem, so you probably should take a close look at the
other fields of the bad rows while you are at it.
regards, tom lane