Oracle SQL Multi Column <> Null Select

Question

SELECT * 
FROM GNGRB.LOAN 
WHERE LOAN, INTRST, RATE IS NOT NULL 
ORDER BY LOAN DESC;

Please identify the error in this query.

Answer 1

SELECT * 
FROM GNGRB.LOAN 
WHERE LOAN IS NOT NULL
  AND INTRST IS NOT NULL
  AND RATE IS NOT NULL 
ORDER BY LOAN DESC;

Answer 2

I can see loan , interest and rate is all number data type values, you can use + as follows:

Select * from your_table t
 Where loan + interest + rate is not null