PL/SQL switch if statement - plsql

Question

How can I change this nested IF statement to a compound IF statements, I know it is pretty much the same but I do not know how to implement that with my code.
SET VERIFY OFF
DECLARE
v_idno donornew.idno%TYPE :=&input_idno;
v_yrgoal donornew.yrgoal%TYPE;
v_newgoal donornew.yrgoal%TYPE;
v_state donornew.state%TYPE;
v_city donornew.city%TYPE;
BEGIN
SELECT yrgoal, state, city INTO v_yrgoal, v_state, v_city
FROM donornew
WHERE idno = v_idno;
IF v_state = 'MA' AND ( v_yrgoal < 400 or v_city = 'Fall River') THEN
v_newgoal := v_yrgoal * 2.5;
ELSE
v_newgoal := v_yrgoal * 1.3;
END IF;
UPDATE donornew
SET yrgoal = v_newgoal
WHERE idno = v_idno;
COMMIT;
END;
/
SET VERIFY ON

Answer 1

Hello bascically for thsi purpose i will suggest you to go with purely SQL logic rather than PLSQL approach. Merge is the perfect example to resolve your issues.
-- Approach is to use SQL approach rather then using PLSQL approach.
MERGE INTO donornew D USING
(SELECT yrgoal,
state,
city,
idno,
CASE
WHEN state = 'MA'
AND (yrgoal < 400
OR city = 'Fall River')
THEN yrgoal * 2.5
ELSE yrgoal * 1.3
END newgoal
FROM donornew
WHERE idno = v_idno -- Input IDNO
)A ON (d.idno = a.idno )
WHEN MATCHED THEN
UPDATE SET yrgoal = a.newgoal;
Let me know if this helps.