[pgadmin-support] Alter table not correct for Postgres 8.0+

[Gary Doades]

If I try to add a column that is not null with a default the SQL that 
gets generated is:

ALTER TABLE control
   ADD COLUMN security_options int;
ALTER TABLE control
   ALTER COLUMN security_options SET NOT NULL;
ALTER TABLE control
   ALTER COLUMN security_options SET DEFAULT 32;
This generates an error if the table already contains rows.
Whereas from 8.0 the following will work and ought to be used instead:
ALTER TABLE control
   ADD COLUMN security_options int not null default 32;
Thanks,
Gary.
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