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Dynamisk Oracle Pivot_In_Clause

Du kan bygge dynamisk forespørgsel i dit script, se på dette eksempel:

variable rr refcursor

declare 
  bb varchar2(4000);
  cc varchar2( 30000 );
begin 
    WITH PIVOT_DATA AS (
         SELECT *
         FROM
         (
             SELECT USERNAME, GRANTED_ROLE
             FROM DBA_USERS U LEFT OUTER JOIN DBA_ROLE_PRIVS R
             ON U.USERNAME = R.GRANTEE
          )
    )
    select ''''|| listagg( granted_role, ''',''' ) 
            within group( order by granted_role ) || '''' as x 
    into bb
    from (
      select distinct granted_role from pivot_data
    )
    ;

    cc := q'[
    WITH PIVOT_DATA AS (
         SELECT *
         FROM
         (
             SELECT USERNAME, GRANTED_ROLE
             FROM DBA_USERS U LEFT OUTER JOIN DBA_ROLE_PRIVS R
             ON U.USERNAME = R.GRANTEE
          )
    )
    SELECT *
    FROM PIVOT_DATA
    PIVOT
    (
        COUNT(GRANTED_ROLE)
        FOR GRANTED_ROLE
        IN(]'  || bb || q'[) -- Just an example
    )
    ORDER BY USERNAME ASC]';

    open :rr for cc;
end;
/

SET PAGESIZE 200
SET LINESIZE 16000
print :rr
 

Her er resultatet (kun lille fragment, fordi det er meget bredt og langt)

----------------------------------------------------------------------------------------------------------------------------------- USERNAME 'ADM_PARALLEL_EXECUTE_TASK' 'APEX_ADMINISTRATOR_ROLE' 'AQ_ADMINISTRATOR_ROLE' 'AQ_USER_ROLE' ------------------------------ --------------------------- ------------------------- ----------------------- ---------------------- ANONYMOUS 0 0 0 0 APEX_030200 0 0 0 0 APEX_PUBLIC_USER 0 0 0 0 APPQOSSYS 0 0 0 0 .............. IX 0 0 1 1 OWBSYS 0 0 1 1


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