SQL语句ALTER 修改和删除

ALTER TABLE SCOTT.TEST RENAME TO TEST1–修改表名 ALTER TABLE SCOTT.TEST RENAME COLUMN NAME TO NAME1 –修改表列名 ALTER TABLE SCOTT.TEST MODIFY NAME1 NUMBER(20) –修改字段类型 ALTER TABLE SCOTT.TEST ADD ADDRESS VARCHAR2(40) –添加表列 ALTER TABLE SCOTT.TEST DROP NAME CASCADECONSTRAINTS –删除表列