sql

select into from 和 insert into select都是用来复制表,两者的主要区别为: select into from 要求目标表不存在,因为在插入时会自动创建。insert into select from 要求目标表存在

 

 

备份表数据: create table emp as select * from scott.emp

还原表数据:insert into emp select * from scott.emp

 

 

1. 复制表结构及其数据:

create table table_name_new as select * from table_name_old

2. 只复制表结构:

create table table_name_new as select * from table_name_old where 1=2;

或者:

create table table_name_new like table_name_old

3. 只复制表数据:

如果两个表结构一样:

insert into table_name_new select * from table_name_old

如果两个表结构不一样:

insert into table_name_new(column1,column2...) select column1,column2... from table_name_old

pasting

 

--下面以临时表#temp为例,判断它是否存在,存在就删除它
IF OBJECT_ID('tempdb..#temp') is not null
drop table #temp、

if exists(select * from dbo.sysobjects where name='houseInfo')  
    drop table houseInfo 

 

创建存储过程 

 

CREATE PROCEDURE ProSentEmail
AS

go

 

posted @ 2018-05-02 16:08  xjt360  阅读(157)  评论(0编辑  收藏  举报