Lookup from list column?

Question

Is it possible to look-up anything but single line text values when creating a lookup column?

E.g. I have a list with some general data ind it, one of the columns contains numbers. They should form the basis for a column in another list, but when I try to create the lookup, I can't select the column in question.

Answer 1

It filters the column list down to just the text fields. You can probably define a custom field type that may be able to overcome this.

Answer 2

You could create an event receiver on the lookup list that copies the numberic values (OnItemAdded, OnItemUpdated) in its string representation into a text field which you can use for your lookup.