ALTER TABLE syntax

I am trying to alter a table in Oracle database by adding two new columns to it with SQL query as below:

ALTER TABLE Members 
      ADD annual_dues NUMBER(5,2) not null DEFAULT '52.50', 
      ADD payment_date DATE;

On executing it, I am getting an error as below:

I have played around it but it didn't help. What is wrong in the SQL query?

Answers

I think you need to put NOT NULL after the DEFAULT 52.50:

ALTER TABLE Members 
   ADD ( annual_dues NUMBER(5,2) DEFAULT 52.50 NOT NULL
       , payment_date DATE );

Need Your Help