python运行实例（demo_python_mysql_alter_primary

代码示例：（标识：demo_python_mysql_alter_primary_key）

demo_python_mysql_alter_primary_key.py

import mysql.connector

mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  passwd="yourpassword",
  database="mydatabase"
)

mycursor = mydb.cursor()

mycursor.execute("ALTER TABLE customers ADD COLUMN id INT AUTO_INCREMENT PRIMARY KEY")

#If this page is executed with no error, the table "customers" now has a primary key

运行结果：