compare number two, in two tables varchar column

Hello
I have two tables with varchar column number.
SQL> desc ckm1
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 N_COMP_ID                                 NOT NULL NUMBER(10)
 C_COMP_NAME                               NOT NULL VARCHAR2(120)
 C_HOSTNAME                                         VARCHAR2(20)
 N_FRWK_COMP_FLAG                          NOT NULL NUMBER(1)
C_COMP_ENV                                         VARCHAR2(1024)
SQL> desc ckm2
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 N_COMP_ID                                 NOT NULL NUMBER(10)
 C_COMP_NAME                               NOT NULL VARCHAR2(120)
 C_HOSTNAME                                         VARCHAR2(20)
 N_FRWK_COMP_FLAG                          NOT NULL NUMBER(1)
C_COMP_ENV                                         VARCHAR2(1024)
Is any function similar to 'dbms_lob.compare '...
Thus, two field of two columns of text in another table can be compared?
Any example?
Any advice on this?
No comment

Something like that?

Select t1.n_comp_id, decode(t1.n_comp_name,t2.n_comp_name,'EQUAL','DIFFERENT') EQ_DIFF
from chm1 t1, chm2 t2
where t1.n_comp_id=t2.n_comp_id;

Max
[My Italian blog Oracle | http://oracleitalia.wordpress.com/2010/01/02/query-gerarchiche/]

Tags: Database

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------------------------------------------------------------------------------------------------------------
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       VAL
----------
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         2
         3
         4
         5
         6
         7
         8
         9
        10

SQL> select * from source_tab;

       VAL
----------
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         7
         8
         9
        10

SQL> select a.*
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  3  where a.val = b.val(+) and
  4        b.val is null;

       VAL
----------
         5
         1
         4
         2
         3

    John

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  band_id   number primary key,
  band_name varchar2(20),
  status    varchar2(20)
);

create table band_member(
  band_id references band,
  member_name varchar2(20)
);

insert into band values(3, 'The Rutles', 'prefab4');
insert into band values(4, 'The Beatles', 'established');
commit;

insert into band_member values(3, 'Ron Nasty');
insert into band_member values(3, 'Dirk McQuickly');
insert into band_member values(3, 'Stig O''Hara');
insert into band_member values(3, 'Barrington Womble');
commit;

insert into band_member values(4, 'John Lennon');
insert into band_member values(4, 'Paul McCartney');
insert into band_member values(4, 'George Harrison');
insert into band_member values(4, 'Ringo Starr');
commit;
    -The rules relating to the conditional objective of read-only

    1 is not allowed to update band.band_name when band.status = 'prefab4'
    2 is not allowed to insert/update / deletion of lines of band_member when the parent a band.status row = 'prefab4'

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before update of band_name on band
for each row
when (old.status = 'prefab4' or new.status = 'prefab4')
begin
  raise_application_error(-20010,
    'can not update band_name when status=''prefab4''');
end;
/

create or replace trigger t2
before insert or update or delete on band_member
for each row
declare
  l_status band.status%type;
  l_band_id band_member.band_id%type;
  cursor l_cursor (p_band_id number) is
  select status from band
  where band_id = p_band_id
  for update;
begin
  if updating or inserting then
    l_band_id := :new.band_id;
  else
    l_band_id := :old.band_id;
  end if;
  open l_cursor(l_band_id);
  fetch l_cursor into l_status;
  close l_cursor;
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    raise_application_error(-20011,
      'can not update child when parent status=''prefab4''');
  end if;
end;
/
    -Quick example of test for each condition
    update band
set    band_name = 'THE RUTLES'
where  band_id = 3;

update band
       *
ERROR at line 1:
ORA-20010: can not update band_name when status='prefab4'
ORA-06512: at "DEMO.T1", line 2
ORA-04088: error during execution of trigger 'DEMO.T1'


update band_member
set    member_name = 'RON NASTY'
where  member_name = 'Ron Nasty';

update band_member
       *
ERROR at line 1:
ORA-20011: can not update child when parent status='prefab4'
ORA-06512: at "DEMO.T2", line 18
ORA-04088: error during execution of trigger 'DEMO.T2'
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    I tried to provide the information needed, but if I managed to omit something, please let me know.

    See you soon,.

    Chalfont

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    user13146957 wrote:
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