ORA-28113: political predicate a error IN APEX

My dear, I am trying to impliment of VPD based with Apex security

The function that I used is

create or replace
FUNCTION CC_SEC)
p_schema IN VARCHAR2 DEFAULT NULL,
p_object IN VARCHAR2 DEFAULT NULL)
RETURN VARCHAR2
AS
Start
-RETURN 'upper (userid) = nvl (v ("APP_USER"), USER)';
RETURN "(upper (userid) = decode (nvl (v ("APP_USER"), USER),'|" "))" ADMIN "' |', sole (userid), nvl (v ("APP_USER"), USER)';
END;

and the policy to add as below

BEGIN
DBMS_RLS.add_policy
(object_schema = > 'TMAPP',)
object_name = > "USER_DST"
POLICY_NAME = > "DATA_SEL_POL"
function_schema = > 'TMAPP ',.
policy_function = > 'CC_SEC');
END;


here in the cc_sec function, I am tryin to use the option of decoding. For use with decode them (the line is commented out above), it will work without any problem. But after decoding, I get the error ORA-28113: political predicate has the error of connection of the apex.

Help, please

Dennis

Hey, Dennis,.

DJ wrote:
My dear, I am trying to impliment of VPD based with Apex security

The problem has something to do with the Apex?

The function that I used is...
RETURN "(upper (userid) = decode (nvl (v ("APP_USER"), USER),'|" "))" ADMIN "' |', sole (userid), nvl (v ("APP_USER"), USER)';

The immediate problem is unbalanced parentheses. "You left 8 ' (of, but only 6 right ' ') ''s.

Test the predciate before trying to create a strategy.
If the user name cannot be NULL, then what you do can be sinmplifed like this:

WHERE       NVL ( v ('APP_USER')
           , USER
           )          IN ( 'ADMIN'
                    , UPPER (userid)
                     )

When you have this being debugged in a regular query, and you're ready to create the strategy of the CAE, use the notation Q for the string literal:

RETURN Q'{NVL ( v ('APP_USER')
           , USER
           )          IN ( 'ADMIN'
                    , UPPER (userid)
                     )
         }'

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    Name                                      Null?    Type
    ----------------------------------------- -------- ----------------------------
    FIELD_A1 NOT NULL NUMBER
    FIELD_A2 VARCHAR2 (50)
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    FIELD_A4 NUMBER (5.2)
    FIELD_A5 NOT NULL VARCHAR2 (10)




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    --------------------------------------------------------------------------------
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    ALTER TABLE 'U1 '. "" CHANGE TBL_A ' ("FIELD_A2' VARCHAR2 (50))
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    ALTER TABLE 'U1 '. "" CHANGE TBL_A ' ('FIELD_A4' NULL)
    ALTER TABLE 'U1 '. "" CHANGE TBL_A ' ('FIELD_A5' ACTIVATE NOT NULL)

    Thanks for the reply rp,

    I got the result using "select dbms_metadata_diff.compare_alter ('TABLE', 'TBL_A', 'TBL_A', 'USER1', 'USER2') from dual"

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