标签:ora bsp tab 方法 1.5 ble varchar 不能 create
1.直接备份(防止误操作后数据库表不能恢复)
create table new_table as select * from old_table;
2.创建表头,然后插入列(繁琐的做法)
create table new_table (col1 VARCHAR2(20), col2 NUMBER, col3 VARCHAR2(30), col4 VARCHAR2(50))
然后
insert into new_table select * from old_table;
commit;
标签:ora bsp tab 方法 1.5 ble varchar 不能 create
原文地址:http://www.cnblogs.com/Lxiaojiang/p/6051397.html