一、

yum install mariadb-server -y

对数据库安全初始化(设置登陆密码)

二、数据库可视化了解更多加群764261140

下载phpMyAdmin-3.4.0-all-languages.tar.bz2安装包

2.安装PHP MySQL连接数据库

3.重启httpd

4.将安装包复制到/var/www/html/默认发布目录下,便于测试

cd /var/www/html

cp /root/Desktop/phpMyAdmin/Admin-3.4.0-all-languages.tar.br2./

ls

yum install php php-mysql.x86_64 -y

5.解压安装包

tar jxf phpMyAdmin/Admin-3.4.0-all-languages.tar.br2.

ls

6.重命名数据库管理软件目录 方便管理

mv phpMyAdmin/Admin-3.4.0-all-languages mysqladmin

cd mysqladmin

ls

7.测试

172.25.254.45/mysqladmin/

三、 yum install gcc -y

  yum  install MySQL-python -y

 pip install Mysql-python           #这里要连接网络

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查看python3数据库中的userinfo表

importMySQLdb

# 打开门

conn = MySQLdb.Connect(host =‘127.0.0.1’,user=‘root’,passwd=‘dd’,db=‘python3’)

# 伸出手

cur = conn.cursor()# 创建一个手

# 拿东西

# 这个操作影响了多少行(有多少行被操作了)

reCount = cur.execute(‘select * from userInfo’)

# 把手伸回来

cur.close()

# 把门观赏

conn.close()

printreCount

给python3数据库中的表count更新两行数据

importMySQLdb

conn = MySQLdb.connect(host=‘127.0.0.1’,user=‘root’,passwd=‘dd’,db=‘python3’)

cur = conn.cursor()

sql =‘update count set money = %s where id =1’

params = (0,)

reCount = cur.execute(sql,params)

sql =‘update count set money = %s where id = 2’

params = (100,)

reCount = cur.execute(sql,params)

conn.commit()

cur.close()

conn.close()

importMySQLdb

# 打开门

conn = MySQLdb.connect(host=‘127.0.0.1’, user=‘root’, passwd=‘dd’, db=‘python3’)

# 伸出手

cur = conn.cursor()

sql =‘delete from usermg where id = %s’

params = (1,)

reCount = cur.execute(sql,params)

# 提交请求

conn.commit()

# 把手伸回来

cur.close()

# 把门关上

conn.close()

importMySQLdb

# 打开门

conn = MySQLdb.connect(host=‘127.0.0.1’, user=‘root’, passwd=‘dd’, db=‘python3’)

# 伸出手

cur = conn.cursor()

sql =‘delete from usermg where id = %s’

params = (1,)

reCount = cur.execute(sql,params)

# 提交请求

conn.commit()

# 把手伸回来

cur.close()

# 把门关上

conn.close()

importMySQLdb

conn = MySQLdb.connect(host=‘127.0.0.1’,user=‘root’,passwd=‘dd’,db=‘python3’)

cur = conn.cursor()

sql ='update usermg set name = %s where id = %s ’

params = (‘pp’,‘1’)

reCount = cur.execute(sql,params)

conn.commit()

cur.close()

conn.close()

importMySQLdb

# 打开门

conn = MySQLdb.connect(host=‘127.0.0.1’,user=‘root’,passwd=‘dd’,db=‘python2’)

# 伸出手

#cur = conn.cursor() #创建一个手

cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)

# 拿东西

# 这个操作影响了多少行(有多少行被操作)

reCount = cur.execute(‘select * from userInfo’)

data = cur.fetchall()

# 把手伸回来

cur.close()

# 把门关上

conn.close()

printreCount

printdata

处理多条数据了解更多加群764261140

importMySQLdb

conn = MySQLdb.connect(host=‘127.0.0.1’,user=‘root’,passwd=‘dd’,db=‘python2’)

cur = conn.cursor()

li = [

(‘2’,‘haha’,‘www’),

(‘3’,‘kiki’,‘qqq’)

]

# 打开一次数据库,执行多条数据操作

reCount = cur.executemany(‘insert into usermg(id,name,address) values(%s,%s,%s)’,li)

# 提交请求

conn.commit()

# 把手伸回来

cur.close()

# 把门关上

conn.close()

printreCount

提交和回滚

importMySQLdb

conn = MySQLdb.connect(host=‘127.0.0.1’, user=‘root’, passwd=‘dd’, db=‘python2’)

cur = conn.cursor()

sql =‘update money set money = %s where id =1’

params = (0,)

reCount = cur.execute(sql,params)

#conn.commit()

sql =‘updateee money set money = %s where id =2’

params = (300,)

reCount = cur.execute(sql,params)

conn.commit()

# 把手伸回来

cur.close()

# 把门关上

conn.close()