Python3操作MySQL8.XX创建表|CRUD基本操作

---

Win11查看安装的Python路径及安装的库

Python PEP8 代码规范常见问题及解决方案

Python3操作MySQL8.XX创建表|CRUD基本操作

Python3操作SQLite3创建表主键自增长|CRUD基本操作

anaconda3最新版安装|使用详情|Error: Please select a valid Python interpreter

Python函数绘图与高等代数互融实例(一):正弦函数与余弦函数

Python函数绘图与高等代数互融实例(二):闪点函数

Python函数绘图与高等代数互融实例(三):设置X|Y轴|网格线

Python函数绘图与高等代数互融实例(四):设置X|Y轴参考线|参考区域

Python函数绘图与高等代数互融实例(五): 则线图综合案例

---

一： Python3操作Mysql数据库建表 

import pymysql

'''
  Python3操作Mysql创建表：
'''

# 打开数据库连接 db = pymysql.connect(host="localhost", user="您的用户名", password="您的密码", database="数据库名称", charset='utf8' )
conn = pymysql.connect(user="root", password="123456", host="localhost", database="tope-pay-user", port=3306,
                       charset='utf8', autocommit=False)
cursor = conn.cursor()
cursor.execute("DROP TABLE IF EXISTS sys_books;")
try:
    sql = """
    CREATE TABLE sys_books (
    id BIGINT NOT NULL AUTO_INCREMENT COMMENT '主键ID',
    NAME VARCHAR (50) NOT NULL COMMENT '名称',
    category VARCHAR (50) NOT NULL COMMENT '类别',
    price DECIMAL (10, 2) DEFAULT '0.00' COMMENT '价格',
    publish_time datetime DEFAULT NULL COMMENT '出版日期',
    create_time datetime NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    update_time datetime NULL DEFAULT CURRENT_TIMESTAMP COMMENT '更新时间',
    deleted INT (1) DEFAULT '0' COMMENT '逻辑删除：0--正常 1--删除',
    PRIMARY KEY (id)
    ) ENGINE = INNODB DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = COMPACT COMMENT = '书籍信息表';   
    """
    cursor.execute(sql)
    print("表[sys_books]", "创建成功")
except pymysql.Error as err:
    print("建表异常： ", err)

finally:
    cursor.close()
    conn.close()

二:  Python3操作Mysql8.xx查看数据库版本信息 

import pymysql

'''
  Python3操作mysql数据
'''
# 打开数据库连接 db = pymysql.connect(host="localhost", user="您的用户名", password="您的密码", database="数据库名称", charset='utf8' )
conn = pymysql.connect(user="root", password="123456", host="localhost", database="tope-pay-user", port=3306,
                       charset='utf8', autocommit=False)
# 创建游标对象
cursor = conn.cursor()
try:
    # 执行查询
    cursor.execute("select version()")
    # 获取单条数据
    resultData = cursor.fetchone()
    print("resultData: ", resultData)
except pymysql.Error as err:
    print("系统异常: ", err)

finally:
    print("释放资源!")
    cursor.close()
    conn.close()

三: 执行结果

D:\program_file_worker\anaconda\python.exe D:\program_file_worker\python_source_work\SSO\grammar\ClassGrammarMysqlExecutorQuery.py 
resultData:  ('8.0.15',)
释放资源!

四: 批量插入数据

import pymysql
import datetime

'''
  Python3操作Mysql批量插入数据：
'''
# 打开数据库连接 db = pymysql.connect(host="localhost", user="您的用户名", password="您的密码", database="数据库名称", charset='utf8' )
conn = pymysql.connect(user="root", password="123456", host="localhost", database="tope-pay-user", port=3306,
                       charset='utf8', autocommit=False)
# 获取游标
cursor = conn.cursor()

try:
    day = datetime.datetime.now()
    # 数据列表
    paramData = [('零基础学Python3', 'Python', '79.00', day, day, day, 0),
                 ('零基础学Java', 'Java', '90.00', day, day, day, 0),
                 ('零基础学C++', 'C++', '70.00', day, day, day, 0),
                 ('零基础学Python数据可视化', 'Python', '49.00', day, day, day, 0),
                 ('零基础学C语言', 'C', '39.00', day, day, day, 0),
                 ('零基础学android', 'Android', '89.00', day, day, day, 0)]
    sql = ("insert into sys_books(name,category,price,publish_time,create_time,update_time,deleted) value"
           "(%s,%s,%s,%s,%s,%s,%s)")
    cursor.executemany(sql, paramData)
    # 手动提交数据
    conn.commit()
    print("批量插入数据成功")
except pymysql.Error as err:
    print("批量插入异常: ", err)
    conn.rollback()
finally:
    print("释放系统资源")
    cursor.close()
    conn.close()

五:  查询数据 

import pymysql

'''
  Python3操作mysql数据
'''
# 打开数据库连接 db = pymysql.connect(host="localhost", user="您的用户名", password="您的密码", database="数据库名称", charset='utf8' )
conn = pymysql.connect(user="root", password="123456", host="localhost", database="tope-pay-user", port=3306,
                       charset='utf8', autocommit=False)
# 创建游标对象
cursor = conn.cursor()
try:
    # 执行查询
    cursor.execute("select version()")
    # 获取单条数据
    resultData = cursor.fetchone()
    print("resultData: ", resultData)
    cursor.execute("select * from sys_books")
    resultList = cursor.fetchall()
    for item in resultList:
        print("数据记录: ", item)
except pymysql.Error as err:
    print("系统异常: ", err)

finally:
    print("释放资源!")
    cursor.close()
    conn.close()

六: 执行结果

D:\program_file_worker\anaconda\python.exe D:\program_file_worker\python_source_work\SSO\grammar\ClassGrammarMysqlExecutorQuery.py 
resultData:  ('8.0.15',)
数据记录:  (1, '零基础学Python3', 'Python', Decimal('79.00'), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), 0)
数据记录:  (2, '零基础学Java', 'Java', Decimal('90.00'), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), 0)
数据记录:  (3, '零基础学C++', 'C++', Decimal('70.00'), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), 0)
数据记录:  (4, '零基础学Python数据可视化', 'Python', Decimal('49.00'), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), 0)
数据记录:  (5, '零基础学C语言', 'C', Decimal('39.00'), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), 0)
数据记录:  (6, '零基础学android', 'Android', Decimal('89.00'), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), datetime.datetime(2023, 9, 26, 16, 58, 34), 0)
数据记录:  (7, '零基础学Python3', 'Python', Decimal('79.00'), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), 0)
数据记录:  (8, '零基础学Java', 'Java', Decimal('90.00'), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), 0)
数据记录:  (9, '零基础学C++', 'C++', Decimal('70.00'), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), 0)
数据记录:  (10, '零基础学Python数据可视化', 'Python', Decimal('49.00'), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), 0)
数据记录:  (11, '零基础学C语言', 'C', Decimal('39.00'), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), 0)
数据记录:  (12, '零基础学android', 'Android', Decimal('89.00'), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), datetime.datetime(2023, 9, 26, 17, 9, 41), 0)
释放资源!

Process finished with exit code 0