Re: EXECUTE IMMEDIATE statement FAILS

On Apr 24, 7:49 pm, Ken Denny <k..._at_kendenny.com> wrote:
> On Apr 24, 12:38 pm, xylem <me_at_..._at_yahoo.co.uk> wrote:
>
>
>
>
>
> > Hi all,
>
> > My procedure below is failing to provide the desired result and I've
> > failed to track down what is the cause. The procedure is supposed to
> > dynamically grant roll on objects to users. I've tested the cursor SQL
> > and it's working fine. However, sql_stmt is failing. When I run the
> > procedure I get the following error:
>
> > Warning: Procedure created with compilation errors.
>
> > SQL> sho err
> > Errors for PROCEDURE G_R:
>
> > LINE/COL ERROR
> > -------- ----------------------------------------------------
> > 35/3     PL/SQL: Statement ignored
> > 35/50    PLS-00302: component 'VIEW_NAME' must be declared
> > SQL>
>
> > Any help will be appreciated.
>
> > Kindly,
> > Mark
>
> > Create or Replace Procedure g_r(grant_revoke_p varchar2,
> >                                 objects_p varchar2,
> >                                 instn_p varchar2,
> >                                 object_p varchar2,
> >                                 Debug NUMBER DEFAULT 0) Is
>
> > sql_stmt varchar2(20000);
> > grant_revoke  VARCHAR2(30);
> > objects   VARCHAR2(30);
> > instn  VARCHAR2(30);
> > object  VARCHAR2(30);
>
> > Cursor c_gr2 Is
> >         select decode(upper('G'),'G','GRANT','R','REVOKE','***UNKNOWN
> > OPTION***')||' '||VIEW_NAME,
> >                decode(upper('G'),'G','TO'   ,'R','FROM'  ,'***UNKNOWN
> > OPTION***')||' '||
> >                USERNAME
> >           from USER_VIEWS, ALL_USERS
> >          where USERNAME like 'USER_L_%'
> >            and substr(USERNAME,-3) like translate('%','*','%')
> >            and upper('G') in ('G')
> >            and upper('A')     in ('A')
> >            and VIEW_NAME like upper('%')
> >                  order by 1;
> > r_gr2 c_gr2%rowtype;
>
> > Begin
> > grant_revoke := UPPER(grant_revoke_p);
> > objects := UPPER(objects_p);
> > instn := UPPER(instn_p);
> > object := UPPER(object_p);
>
> > Open c_gr2;
> >   Loop
> >   Fetch c_gr2 INTO r_gr2;
> >   sql_stmt := grant_revoke||' SELECT ON '||r_gr2.VIEW_NAME||
> > grant_revoke||r_gr2.USERNAME;
> >   IF Debug = 1 THEN
> >        DBMS_OUTPUT.Put_Line(sql_stmt);
> >   ELSE
> >        Execute Immediate sql_stmt;
> >    END IF;
> >     EXIT WHEN c_gr2%NOTFOUND;
> >   End Loop;
> > Close c_gr2;
> > End;
> > /
>
> You need to alias the column names in your cursor. r_gr does not have
> columns named VIEW_NAME or USERNAME. The columns are
> "decode(upper('G'),'G','GRANT','R','REVOKE','***UNKNOWN OPTION***')||'
> '||VIEW_NAME" and
> "decode(upper('G'),'G','TO'   ,'R','FROM'  ,'***UNKNOWN OPTION***')||'
> '|| USERNAME- Hide quoted text -
>
> - Show quoted text -

Thanks Ken!

I created the aliases for the two DB columns as you suggested, thus:

select
decode(upper(grant_revoke),'G','GRANT','R','REVOKE','***UKJENT_OPSJON***')||' '||VIEW_NAME as VIEW_NAME,
decode(upper(grant_revoke),'G','TO' ,'R','FROM' ,'***UKJENT_OPSJON***')||' '||USERNAME as USERNAME

The procedure is compilling but something else is happening. When I execute it. In SQL*PLUS, I get:
SQL> exec g_r('G','A','%','%',1)
R SELECT ON R In Toad, when I execute the procedure in the Schema Browser, I get the same result as in SQL*PLUS. When I execute it as a script (in Toad), I get close to my desired result, i.e;

GRANT SELECT ON GRADES TO SUP_218;
GRANT SELECT ON GRADES TO SUP_219;
GRANT SELECT ON GRADES TO SUP_221;
...

However, when I change the parameter value for grant_revoke to 'R' so that it prints REVOKE and FROM respectively, I still get the same result as above. Any suggestion/s to what I can do to solve thing problem?

Thanks in advance.

Kindly,
Mark Received on Thu Apr 24 2008 - 17:18:12 CDT