in A2 enter
=IF(B2<>"",MAX($A$1:OFFSET(A2,-1,0))+1,"")
and copy this formula down for as many rows as required. Now everytime
someone enters data in column B column A shows a ID value
Note that for this to work as a key field, entries have to be made in
sequential row order (which means that you might as well use
A1: =IF(B1<>"",ROW(),"")
and copy down.
One essential element of key fields is that the key stays identified
with a record. Using the formula below will renumber the records if data
is entered out of order and then filled in, or if a row is inserted or
deleted.
For a true key field, I think you'd need to use an event macro to insert
a sequential number.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.