Alter Oracle Column

ALTER TABLE 구테이블명 RENAME TO 신테이블명;
ALTER TABLE [TABLE NAME] RENAME COLUMN [COLUMN NAME] TO [NEW COLUMN NAME];

컬럼명 바꾸기ALTER TABLE high_tax
RENAME COLUMN year_comm TO tax ;


컬럼수정alter table  high_tax
modify ( tax number(10,2)  ) ;


컬럼 삭제Alter table  high_tax
Drop ( tax );


컬럼추가Alter table  high_tax
add ( tax number(10,2)  default 2000  );