python操作数据库-数据表

CREATE database IF NOT exists zbltest2 default character set ‘utf8‘;
USE zbltest2;
CREATE TABLE IF NOT EXISTS `user`(
id SMALLINT,
username VARCHAR(20)
) ENGINE=INNODB CHARSET=UTF8;

 1 #SELECT NOW();
 2 # SELECT * FROM student
 3 -- 注释 alter
 4 CREATE database IF NOT exists zbltest2 default character set ‘utf8‘;
 5 USE zbltest2;
 6 CREATE TABLE IF NOT EXISTS `user`(
 7 id SMALLINT,
 8 username VARCHAR(20)
 9 ) ENGINE=INNODB CHARSET=UTF8;
10 
11 -- 新闻分类
12 CREATE TABLE IF NOT EXISTS cms_cate(
13 id TINYINT,
14 cateName varchar(50),
15 cateDesc varchar(200)
16 )ENGINE=MyISAM CHARSET=UTF8;
17 
18 #创建新闻表
19 CREATE TABLE IF NOT EXISTS cms_news(
20 id INT,
21 title VARCHAR(50),
22 content TEXT,
23 pubTime INT,
24 clickNum INT,
25 isTop TINYINT(1) COMMENT ‘0代表不置顶，1代表置顶‘
26 )ENGINE=INNODB CHARSET=UTF8;

 1 CREATE database IF NOT exists zbltest1 default character set ‘utf8‘;
 2 USE zbltest1;
 3 #下面的`student`是反引号,在数字1左边和波浪线在一个按键上,目的是为了不和sql自带关键字重合
 4 CREATE TABLE IF NOT EXISTS `student`(
 5 id INT,
 6 `name` VARCHAR(45),
 7 gender VARCHAR(45)
 8 ) ENGINE=INNODB CHARSET=UTF8;
 9 INSERT student values(1,‘ZBL1‘,‘MAN‘);
10 INSERT student values(2,‘ZBL2‘,‘MAN‘);
11 INSERT student values(3,‘ZBL3‘,‘MAN‘);
12 select * FROM student;

 1 import pymysql
 2 try:
 3 # 获取一个数据库连接，注意如果是UTF-8类型的，需要制定数据库
 4     conn=pymysql.connect(host=‘localhost‘,user=‘root‘,passwd=‘root‘,db=‘zbltest1‘,port=3306,charset=‘utf8‘)
 5     cur=conn.cursor()#获取一个游标
 6     cur.execute("INSERT student VALUES (‘4‘, ‘zbl4‘, ‘man‘)")
 7     cur.execute(‘select * from student‘)
 8     # data=cur.fetchall()
 9     for d in cur :
10 
11         #注意int类型需要使用str函数转义
12         print("ID: "+str(d[0])+‘  名字： ‘+d[1]+"  性别： "+d[2])
13         print("row_number:" , (cur.rownumber) )
14         #print(‘hello‘)
15 
16     cur.close()#关闭游标
17     conn.close()#释放数据库资源
18 except  Exception :print("发生异常")