On 2009-01-31, Andreas Wenk <a.w...@netzmeister-st-pauli.de> wrote:
> Hi List,
>
> I have a short question to psql.
>
> Why does this not work:
>
> postgres=# ALTER TABLE tab1 ALTER COLUMN nr TYPE serial;
> ERROR:  type "serial" does not exist
>
> but this:
>
> postgres=# ALTER TABLE tab1 DROP COLUMN nr;
> ALTER TABLE
> postgres=# ALTER TABLE tab1 ADD COLUMN nr serial;
> NOTICE:  ALTER TABLE will create implicit sequence "tab1_nr_seq" for 
> serial column "tab1.nr"
> ALTER TABLE

because serial isn't a type.

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