Re: get column default value

The default value for a column is just that the value you say is
default. It only come into play when you do an insert into the
table. If you do not provide a value for that column then your
default value is entered.

Now if you set the default value of a column to a sequence, then you
can manage the sequence using the sequence functions: currval,
nextval, and setval. Sequences and their functions are documented in
the pg manual.

On Nov 13, 2006, at 9:49 AM, Jean-Christophe Roux wrote:

> Hello,
> How can I get the default value for a column?
> To change the default value, something like
> ALTER TABLE dummy ALTER COLUMN value SET DEFAULT -12;
> would do the job, but how could I query the value?
>
>
> Thanks in advance
>