Why Is Select Value Sometimes 'undefined' or Blank?

[Lala]

I use a lot of select objects in forms. Sometimes the field is blank when you open an edit form, and sometimes it says 'Undefined'. I would prefer it to be blank. What am I missing?

[kev1n]

Could you provide the SQL query or list used by the Select object?

[Lala]

I've worked it out - I had a spare | at the end of the list!