SQL

sql sequence

CREATE SEQUENCE seq_tipo MINVALUE 1;
ALTER TABLE tipo 
ALTER codt SET DEFAULT nextval('seq_tipo');

/*insert into YOUR_COLUMN_NAME VALUES (nextval('seq_tipo'), 'value_2')*/

sql sequence

CREATE SEQUENCE sequence-name
    START WITH initial-value
    INCREMENT BY increment-value
    MAXVALUE maximum-value
    CYCLE | NOCYCLE;