1. 删除 drop table if exists tablename;
2. 创建 create database if not exists databasename;
create table if not exists tablename;
1. 删除 drop table if exists tablename;
2. 创建 create database if not exists databasename;
create table if not exists tablename;
转载于:https://www.cnblogs.com/doorsky/archive/2009/12/16/1625254.html