It seems that it is doing INSERT INTO declaration (freetext,id) VALUES ('aaasdds',null); ... What if you add: 
__PACKAGE__->columns(Primary => 'id');    # y, i know it implictly use
+s the first column
__PACKAGE__->sequence('declaration_id_seq');

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(An educated guess based on the example at Class::DBI::Pg)

In reply to Re: Class::DBI and 'serial' columns in PostgreSQL by davidrw
in thread Class::DBI and 'serial' columns in PostgreSQL by zby

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