Oracle快速复制表

清空表 

oracle --truncate

truncate table gh_qytc_ls;


//从一个表插入到另外一个表
insert into gh_qytc_ls SELECT * FROM gh_qytc tc;



快速copy一张表数据到另外一张表

1、创建一个临时表，字段和要用的表相同
create table gh_qyghgx_temp as   select * from gh_qyghgx  where qybm='F227';
2、查询临时表是否创建成功
select * from gh_qyghgx_temp;
3、删除临时表的那条记录
truncate table gh_qyghgx_temp;
4、把要备份的表的数据放入临时表
insert into gh_qyghgx_temp select * from gh_qyghgx 
5、查询是否插入成功
select count(*) from gh_qyghgx_temp;