oracle add column to table code example

Example 1: oracle add column

ALTER TABLE table_name 
ADD column_name data_type constraint;

Example 2: alter table oracle

ALTER TABLE tablename MODIFY columnname varchar2(100)

Example 3: add column table pl sql

ALTER TABLE table_name
  ADD column_name column_definition;

Example 4: oracle alter table add column

ALTER TABLE table_name 
	ADD column_name data_type constraint;