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);
SET DEFAULT nextval('newsequence'::regclass);
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Shoaib Mir
http://shoaibmir.wordpress.com/
