The problem is that adding notnull constraint causes a migration (except on 
sqlite). 

Because the field exists already web2py creates a new tmp field, than tried 
to move existing data over. But the data contains Null while the new field 
is notnull=True therefore the migration will fail.

On Saturday, 22 December 2012 21:12:54 UTC-6, Cliff Kachinske wrote:
>
> What happens if you add the field, set it to True,then add the notnull 
> constraint? 

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