-- 1.创建数据库(在磁盘上创建一个对应的文件夹) create database [if not exists] db_name [character set xxx] -- 2.查看数据库 show databases;查看所有数据库 show create database db_name; 查看数据库的创建方式 -- 3.修改数据库 alter database db_name [character set xxx] -- 4.删除数据库 ...
步骤1:连接到SQL数据库 首先,我们需要使用Python中的pyodbc库来连接到SQL数据库。以下是连接数据库的代码: importpyodbc# 连接数据库conn=pyodbc.connect('DRIVER={SQL Server};''SERVER=server_name;''DATABASE=database_name;''UID=username;PWD=password') 1. 2. 3. 4. 5. 6. 7. 步骤2:执行SQL查询 ...
Some database systems require a semicolon at the end of each SQL statement for execution. It is a standard way to separate one SQL statement from another which allows more than one SQL statement to be executed in the same call to the server. So, it is good practice to use a semicolon...
password=server['password'], database=server['database'] ) self.connections[server['name']] = conn def execute_query(self, connection_name, query, params=None): with self.connections[connection_name].cursor() as cursor: # 获取游标(cursor) cursor.execute(query, params) # 执行查询语句 resul...
使用with语句(上下文管理器) 可以通过使用with语句来省去显示的调用close方法关闭连接和游标 withpymssql.connect(server, user, password, database)asconn:withconn.cursor(as_dict=True)ascursor: cursor.execute('SELECT * FROM persons WHERE salesrep=%s','John Doe')forrowincursor:print("ID=%d, Name=%s...
So I have put together this series on Python and Data to help others who may be trying to work with different data sources using Python.This post is the second in a series. The first post shows you how to connect to local SQL Server database from Python....
with pymssql.connect(server = server,user = user,password=password,database =database) as dbconnect: with dbconnect.cursor() as dbcursor: dbcursor.execute("delete from test_teacher") #假设忘记加deletedbcursor.execute("select count(1) from test_teacher") #查询下删除后数据个数 ...
Python 复制 import pyodbc server = '<server>.database.windows.net' database = '<database>' username = '<username>' password = '{<password>}' driver= '{ODBC Driver 17 for SQL Server}' with pyodbc.connect('DRIVER='+driver+';SERVER=tcp:'+server+';PORT=1433;DATABASE='+database+';...
对于本地开发和连接到 Azure SQL 数据库,请添加下面的AZURE_SQL_CONNECTIONSTRING环境变量。 将<database-server-name>和<database-name>占位符替换为你自己的值。 为 Bash shell 显示了示例环境变量。 在本地运行时,交互式身份验证提供无密码选项。 建议使用此选项,因为无需在本地系统上存储或管理身份验证机密。