博客
关于我
oracle复制一张表的数据到另一张表方法
阅读量:544 次
发布时间:2019-03-09

本文共 624 字,大约阅读时间需要 2 分钟。

复制到新表

create table 新表名称  as select * from 源表名称;

如将 test1中的数据复制到新表 test2中,可执行如下命令:

create table test2  as select * from test1;

如果只需要备份表结构,可执行如下命令:

create table test2 as select * from test1 where 1=0;

复制到已存在表

insert into 目标表 select * from 源表;

如将 test3中的数据复制到已存在表 test2中,可执行如下命令:

insert into test2 select * from test3;

扩展内容

同一张表中,将A字段的值赋给B字段

update table_name set B =  A;

将一张表的字段数据插入到另一张表的字段数据中

insert into 目标表(目标表字段1,目标表字段2,......)  select 源表字段1,源表字段1...... from  源表;

如将test1 name 和 age 字段的值插入test2 name 和 age 字段,可执行如下命令:

insert into test2(name,age) select name,age from test1;

SQL Server 备份单张表语句如下:

SELECT * into 目标表 FROM 源表;

转载地址:http://ffqiz.baihongyu.com/

你可能感兴趣的文章
No Datastore Session bound to thread, and configuration does not allow creation of non-transactional
查看>>
No fallbackFactory instance of type class com.ruoyi---SpringCloud Alibaba_若依微服务框架改造---工作笔记005
查看>>
No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalanc
查看>>
No mapping found for HTTP request with URI [/...] in DispatcherServlet with name ...的解决方法
查看>>
No mapping found for HTTP request with URI [/logout.do] in DispatcherServlet with name 'springmvc'
查看>>
No module named 'crispy_forms'等使用pycharm开发
查看>>
No module named cv2
查看>>
No module named tensorboard.main在安装tensorboardX的时候遇到的问题
查看>>
No module named ‘MySQLdb‘错误解决No module named ‘MySQLdb‘错误解决
查看>>
No new migrations found. Your system is up-to-date.
查看>>
No qualifying bean of type XXX found for dependency XXX.
查看>>
No qualifying bean of type ‘com.netflix.discovery.AbstractDiscoveryClientOptionalArgs<?>‘ available
查看>>
No resource identifier found for attribute 'srcCompat' in package的解决办法
查看>>
no session found for current thread
查看>>
No static resource favicon.ico.
查看>>
no such file or directory AndroidManifest.xml
查看>>
No toolchains found in the NDK toolchains folder for ABI with prefix: mips64el-linux-android
查看>>
NO.23 ZenTaoPHP目录结构
查看>>
no1
查看>>
NO32 网络层次及OSI7层模型--TCP三次握手四次断开--子网划分
查看>>