Oracle PL/SQL Tutorial/Sequences/Primary Key

Populating a Primary Key Using a Sequence

SQL>
SQL>
SQL> CREATE TABLE myTable (
  2    id INTEGER CONSTRAINT pk PRIMARY KEY,
  3    status VARCHAR2(10)
  4  );
Table created.
SQL> CREATE SEQUENCE my_seq NOCACHE;
Sequence created.
SQL>
SQL> INSERT INTO myTable (id, status) VALUES (my_seq.nextval, "PLACED");
1 row created.
SQL> INSERT INTO myTable (id, status) VALUES (my_seq.nextval, "PENDING");
1 row created.
SQL>
SQL> select * from myTable;
        ID STATUS
---------- ----------
         1 PLACED
         2 PENDING
SQL>
SQL> drop table myTable;
Table dropped.
SQL> drop sequence my_seq;
Sequence dropped.