SQL语句学习手册//1、创建数据库:CREATE DATABASE database-name 2、删除数据库:drop database dbname 3、备份SQL Server数据:USE master EXEC sp_addumpdevice 'disk', 'testBack', 'c:mssql7backupMyNwind_1.dat' 开始备份:BACKUP DATABASE pubs TO testBack 4、创建新表:create table tabname(col1 type1 [not null] [primary key],col2 type2 [not null],..) 根据已有表创建新表:A:create table tab_new like tab_old (使用旧表创建新表) B:create table tab_new as select col1,col2… from tab_old definition only 5、删除表:drop table tabname