How to select rows which starts with

Question

In the below example I want only the rows which starts with the word CERTIFICATE.
How do we do?
create table full_text(text clob);
insert all
into full_text values('CERTIFICATE OF SERVICE')
into full_text values('APPLICATION FOR CERTIFICATE')
into full_text values('CERTIFICATE OF LIABILITY')
into full_text values('CERTIFICATE OF TITLE')
SELECT * FROM DUAL ;
COMMIT;
CREATE INDEX CTX_INDX_TEXT ON full_text (TEXT) INDEXTYPE IS CTXSYS.CONTEXT;
SQL> select * from full_text where contains(text,'$CERTIFICATE')>0 ;
TEXT
CERTIFICATE OF TITLE
CERTIFICATE OF LIABILITY
APPLICATION FOR CERTIFICATE
CERTIFICATE OF SERVICE
The 3rd row show not appear.
Thanks

Answer 1

I understand what Roger is saying. Since it is past his bedtime there in the UK and still sunny here in California, here is an example for you:
SCOTT@orcl_11g> create table full_text(text clob)
  2  /
Table created.
SCOTT@orcl_11g> insert all
  2  into full_text values('CERTIFICATE OF SERVICE')
  3  into full_text values('APPLICATION FOR CERTIFICATE')
  4  into full_text values('CERTIFICATE OF LIABILITY')
  5  into full_text values('CERTIFICATE OF TITLE')
  6  SELECT * FROM DUAL
  7  /
4 rows created.
SCOTT@orcl_11g> CREATE OR REPLACE PROCEDURE your_proc
  2    (p_rowid IN           ROWID,
  3       p_clob     IN OUT NOCOPY CLOB)
  4  AS
  5  BEGIN
  6    FOR r IN
  7        (SELECT text
  8         FROM      full_text
  9         WHERE  ROWID = p_rowid)
10    LOOP
11        DBMS_LOB.WRITEAPPEND (p_clob, 8, 'XXSTART ');
12        DBMS_LOB.APPEND (p_clob, r.text);
13        DBMS_LOB.WRITEAPPEND (p_clob, 6, ' XXEND');
14    END LOOP;
15  END your_proc;
16  /
Procedure created.
SCOTT@orcl_11g> SHOW ERRORS
No errors.
SCOTT@orcl_11g> BEGIN
  2    CTX_DDL.CREATE_PREFERENCE ('your_datastore', 'USER_DATASTORE');
  3    CTX_DDL.SET_ATTRIBUTE ('your_datastore', 'PROCEDURE', 'your_proc');
  4    CTX_DDL.SET_ATTRIBUTE ('your_datastore', 'OUTPUT_TYPE', 'CLOB');
  5  END;
  6  /
PL/SQL procedure successfully completed.
SCOTT@orcl_11g> CREATE INDEX CTX_INDX_TEXT ON full_text (TEXT) INDEXTYPE IS CTXSYS.CONTEXT
  2  PARAMETERS ('DATASTORE your_datastore')
  3  /
Index created.
SCOTT@orcl_11g> select * from full_text where contains(text,'XXSTART $CERTIFICATE')>0
  2  /
TEXT
CERTIFICATE OF SERVICE
CERTIFICATE OF LIABILITY
CERTIFICATE OF TITLE
SCOTT@orcl_11g>