INVALID ALTER TABLE OPTION on adding column

Question

I am trying to add a new column to an already existing table. I am using Oracle 12c. The SQL Code goes like this:

ALTER TABLE table_name 
ADD column_name VARCHAR(120) 
DEFAULT 'Test' NOT NULL;

I am getting Error Msg = ORA-01735: Invalid ALTER TABLE option . What am i doing wrong?

SOLVED, PLEASE DELETE

I had a project-specific error while compiling my SQL statement, the problem has been solved and there was nothing wrong with the statement to begin with.

Answer 1

Your brackets are wrong, it must be

alter table job_details add (sched_name varchar2(120) DEFAULT 'TestScheduler' not null);

or

alter table job_details add sched_name varchar2(120) DEFAULT 'TestScheduler' not null;

Answer 2

That's rather simple;

SQL> create table table_name (id number);

Table created.

SQL> alter table table_name add
  2    column_name varchar(120)
  3    default 'Test'
  4    not null;

Table altered.

SQL>

Though, saying that "your console outputs ...", what is the console ? Which tool do you use?

[EDIT - everything included into the CREATE TABLE statement]

SQL> create table table_name
  2    (id           number,
  3     column_name  varchar2(120) default 'Test' not null
  4    );

Table created.

SQL>