On Thu, 11 Aug 2011, Steve Atkins wrote:
> This will fail if any of the existing values are integers in the range that
> you're inserting - and it may fail in the future, as you add new records
> if they clash with existing entries.
Steve/Chris/Dave:
I had not looked in deatil at that column before. Having just done this, I
see that it's really a laboratory number, not a unique sample ID. So, I
renamed sample_id to lab_nbr, added a sample_id column, created the sequence
sample_id_seq, updated the table with it, then added the constraint that
sample_id is the primary key.
Thank you all very much!
Rich
