SQL

oracle add column

ALTER TABLE table_name 
ADD column_name data_type constraint;

oracle add column

-- ALTER TABLE <table> ADD <column> <type>  <constraint>;
ALTER TABLE members ADD age NUMBER;
ALTER TABLE members ADD birth_date DATE NOT NULL;
ALTER TABLE members ADD registering DATE DEFAULT sysdate;
ALTER TABLE members ADD member_id NUMBER UNIQUE;

oracle alter table add column

ALTER TABLE table_name 
	ADD column_name data_type constraint;

how to add column in oracle

SELECT ename, deptno, sal, job FROM emp;