Multiple conditions in where (pl/sql)

Question

i have these table_1:

A  |B |C |D
19 |  |  | 
238|  |1 |AS 
45 |23|  | 
196|  |  | 

I need to delete records with fields B , C and D empty.

Is it ok?

Delete From table_1 Where C is null and B is null and D is null;

But if I have another table with multiple fields: A,B,C,D,E,F....Z,AA,AB.....BA...

What would be the best way in this case?

Answer 1

You can use COALESCE :

Delete From table_1 
  Where COALESCE(A,B,C,D,E,F,....,Z,AA,AB,.....,BA) is null;