Er det muligt at kalde en posttype inde i en markør?

Du skal erklære posttypen, før du bruger den i markøren og derefter erklære en variabel, så posten kan passere ind i markøren og derefter gå gennem markøren.

DECLARE
  TYPE dtype_amount IS RECORD (
    typecode DD_DONOR.TYPECODE%TYPE,
    amount   DD_PLEDGE.PLEDGEAMT%TYPE
  );

  CURSOR donnor_pledge (p_typeamount dtype_amount ) IS
    SELECT d.FIRSTNAME,
           d.LASTNAME,
           p.PLEDGEAMT
    FROM   DD_DONOR d
           INNER JOIN DD_PLEDGE p
           USING (IDDONOR)
    WHERE d.TYPECODE  = p_typeamount.typecode
    AND   p.PLEDGEAMT > p_typeamount.amount;

  p_typeamount dtype_amount;
  p_name_amount donnor_pledge%ROWTYPE;
BEGIN
  p_typeamount.typecode := 'I';
  p_typeamount.amount   := 250;
  OPEN donnor_pledge(p_typeamount);
  LOOP
    FETCH donnor_pledge INTO p_name_amount;
    EXIT WHEN donnor_pledge%NOTFOUND;
    DBMS_OUTPUT.PUT_LINE('Donor name: ' || p_name_amount.FIRSTNAME || ' ' || p_name_amount.LASTNAME);
    DBMS_OUTPUT.PUT_LINE('Pledge amount: ' || p_name_amount.PLEDGEAMT);
  END LOOP;
  CLOSE donnor_pledge;    
END;
/

eller du kan gøre det uden posten ved at bruge to parametre for markøren:

DECLARE
  CURSOR donnor_pledge (p_typecode CHAR, p_amount NUMBER ) IS
    SELECT d.FIRSTNAME,
           d.LASTNAME,
           p.PLEDGEAMT
    FROM   DD_DONOR d
           INNER JOIN DD_PLEDGE p
           USING (IDDONOR)
    WHERE d.TYPECODE  = p_typecode
    AND   p.PLEDGEAMT > p_amount;
  
  p_name_amount donnor_pledge%ROWTYPE;
BEGIN
  OPEN donnor_pledge('I', 250);
  LOOP
    FETCH donnor_pledge INTO p_name_amount;
    EXIT WHEN donnor_pledge%NOTFOUND;
    DBMS_OUTPUT.PUT_LINE('Donor name: ' || p_name_amount.FIRSTNAME || ' ' || p_name_amount.LASTNAME);
    DBMS_OUTPUT.PUT_LINE('Pledge amount: ' || p_name_amount.PLEDGEAMT);
  END LOOP;
  CLOSE donnor_pledge;    
END;
/

db<>fiddle her