Python 操作数据库pymysql

import pymysql

#添加数据

conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='', db='yyy')

#更改获取数据结果的数据类型,默认是元组,可以改为字典等:
#cursor=conn.cursor(cursor=pymysql.cursors.DictCursor)
cursor = conn.cursor()

# sql = """CREATE TABLE EMPLOYEE (
#          FIRST_NAME  CHAR(20) NOT NULL,
#          LAST_NAME  CHAR(20),
#          AGE INT,
#          SEX CHAR(1),
#          INCOME FLOAT )"""
#
# cursor.execute(sql)

#row_affected = cursor.execute("create table t1(id INT ,name VARCHAR(20))")

#row_affected=cursor.execute("INSERT INTO t1(id,name) values (1,'alvin'),(2,'xialv')")

#cursor.execute("update t1 set name = 'silv2' where id=2")

#查询数据
row_affected=cursor.execute("select * from t1")  #接受影响的行
one=cursor.fetchone()

# many=cursor.fetchmany(2)
# all=cursor.fetchall()

#scroll
#cursor.scroll(-1,mode='relative')  # 相对当前位置移动

#cursor.scroll(2,mode='absolute') # 相对绝对位置移动

conn.commit()
cursor.close()
conn.close()