Mysql的简单操作_MySQL

create database Student;create table StuInfo(	stuName varchar(8),	stuId varchar(12) primary key,	stuAge int,	stuSex varchar(4));

alter table stuinfo drop stuSex,add stuSex varchar(4);

insert into stuinfo(stuName,stuAge,stuSex,stuId)values("朱豪",22,"男","123456");

select * from stuinfo;

public static void main(String[] args) {		// TODO Auto-generated method stub		Connection conn=null;		try{			String mysqlStr="com.mysql.jdbc.Driver";			String url="jdbc:mysql://localhost:3306/Student";			String user="root";			String password="mysql";			String selectSql="select * from stuinfo;";			String createSql="create table stuinfo(stuName varchar(8),stuId varchar(8),stuSex varchar(4),stuAge int);";			String insertSql="insert into stuinfo(stuName,stuId,stuSex,stuAge)values(?,?,?,?);";			Class.forName(mysqlStr);						conn=DriverManager.getConnection(url,user,password);						PreparedStatement ps=conn.prepareStatement(insertSql);						ps.setString(1, "呵呵");			ps.setString(2, "12345");			ps.setString(3, "男");			ps.setInt(4, 22);			ps.execute();			ResultSet rs=ps.executeQuery(selectSql);						if(conn!=null){				System.out.println("连接成功！");							}						while(rs.next()){				String tname=rs.getString("stuName");				String tsex=rs.getString("stuSex");				String tid=rs.getString("stuId");				int tage=rs.getInt("stuAge");				//System.out.println(rs.getRow());				System.out.println(tname+"-----"+tsex+"----"+tid+"-----"+tage);			}					}catch(ClassNotFoundException e){			e.printStackTrace();		}catch(SQLException e){			e.printStackTrace();		}	}