Creating a sequence of table entries

Question

Hi,
I have a test table and I want to populate ten thousand records in it. I just want to append a standard string and a number sequence to create it.
I am not sure whether it can be done in one SQL statement.
I created the following sequence:
CREATE SEQUENCE SEQUENCE1
START WITH 1
INCREMENT BY 1
MAXVALUE 10000;
I can use SELECT SEQUENCE1.NEXTVAL to display the value 1.
How can I use the UPDATE statement to populate the table with test records?
I tried
UPDATE TABLE TABLE1
SET COL1 = 'PREFX'+(select sequence1.nextval from dual)
and got the error
ORA-02287: sequence number not allowed here
Thanks

Answer 1

SQL> create table test as select * from emp ;
Table created.
SQL> create sequence seq ;
Sequence created.
SQL> select * from test ;
     EMPNO ENAME      JOB              MGR HIREDATE           SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-1980        800                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-1981       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-1981       1250        500         30
      7566 JONES      MANAGER         7839 02-APR-1981       2975                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-1981       1250       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-1981       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-1981       2450                    10
      7788 SCOTT      ANALYST         7566 19-APR-1987       3000                    20
      7839 KING       PRESIDENT            17-NOV-1981       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-1981       1500          0         30
      7876 ADAMS      CLERK           7788 23-MAY-1987       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-1981        950                    30
      7902 FORD       ANALYST         7566 03-DEC-1981       3000                    20
      7934 MILLER     CLERK           7782 23-JAN-1982       1300                    10
14 rows selected.
SQL> update test set deptno = seq.nextval ;
14 rows updated.
SQL> select * from test ;
     EMPNO ENAME      JOB              MGR HIREDATE           SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-1980        800                     1
      7499 ALLEN      SALESMAN        7698 20-FEB-1981       1600        300          2
      7521 WARD       SALESMAN        7698 22-FEB-1981       1250        500          3
      7566 JONES      MANAGER         7839 02-APR-1981       2975                     4
      7654 MARTIN     SALESMAN        7698 28-SEP-1981       1250       1400          5
      7698 BLAKE      MANAGER         7839 01-MAY-1981       2850                     6
      7782 CLARK      MANAGER         7839 09-JUN-1981       2450                     7
      7788 SCOTT      ANALYST         7566 19-APR-1987       3000                     8
      7839 KING       PRESIDENT            17-NOV-1981       5000                     9
      7844 TURNER     SALESMAN        7698 08-SEP-1981       1500          0         10
      7876 ADAMS      CLERK           7788 23-MAY-1987       1100                    11
      7900 JAMES      CLERK           7698 03-DEC-1981        950                    12
      7902 FORD       ANALYST         7566 03-DEC-1981       3000                    13
      7934 MILLER     CLERK           7782 23-JAN-1982       1300                    14
14 rows selected.
SQL>