CREATE TABLE QUICK_TABLE AS SELECT * FROM students AS OF TIMESTAMP SYSDATE-1/24 (1个小时)
CREATE TABLE QUICK_TABLE5 AS SELECT * FROM students AS OF TIMESTAMP (SYSTIMESTAMP - INTERVAL '60' MINUTE)(按分钟算的)
studnets 为删除的表
drop table students
rename quick_table5 to students;
复制
如何复制一张表
步骤一:先执行viewSql
Insert into A select * FROM B;
步骤二:
往A表里面插入B表的数据
alter table EDU_BD_MAJOR add(en_name_ varchar2(200)); --点击EDU_BD_MAJOR 出不来东西