Data Type Oracle PLSQL

SQL> CREATE TABLE products
  2  (
  3    id              NUMBER(6),
  4    name            VARCHAR2(50),
  5    descr            VARCHAR2(4000),
  6    subcategory     VARCHAR2(50),
  7    subcat_desc     VARCHAR2(2000),
  8    category        VARCHAR2(50),
  9    weight_class    NUMBER(2)
 10  );
Table created.
SQL>
SQL>
SQL>
SQL> select id, category, weight_class
  2  from   products
  3  where  weight_class != 1;
no rows selected
SQL>
SQL>
SQL> drop table products;
Table dropped.
SQL>