On Thu, 11 Aug 2011, Chris Travers wrote:
The simplest seems to me to be a sequence and use nextval() to populate
the null values. The major advantage would be that the sequence could stay
around in case you need it again. So for example:
create sequence my_varchar_values;
UPDATE my_table set my_varchar =
nextval('my_varchar_values')::varchar(12) where my_varchar IS NULL;
Chris,
I was wondering if this was the best approach since I have new data to add
to the table. Don't need a starting value, eh?
Many thanks,
Rich
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