On Fri, Oct 29, 2010 at 3:48 PM, venkat
<ven.tammineni@gmail.com> wrote:
Dear All,
I want to convert integer datatype to serial datatype.. is that possible.Please let me know.
I don't think ALTER TABLE will let you do that... so the best way to achieve the same is:
- Create a sequence for the column (set the start of sequence according to the values you got already in the column)
- Now set this sequence as the default value for that specific column which you need to ALTER like this:
ALTER TABLE tablename ALTER COLUMN columnname
SET DEFAULT nextval('newsequence'::regclass);
--
Shoaib Mir
http://shoaibmir.wordpress.com/