# 打开数据库连接 db = MySQLdb.connect("192.168.1.250","root","123456","mydb" ) # 使用cursor()方法获取操作游标 cursor = db.cursor() # 使用execute方法执行SQL语句 cursor.execute("SELECT VERSION()") # 使用 fetchone() 方法获取一条数据 data = cursor.fetchone() #查询username表内数据条数 ...
importmariadb# 连接到MariaDB数据库try:conn=mariadb.connect(user="你的用户名",# 替换为你的MariaDB用户名password="你的密码",# 替换为你的MariaDB密码host="localhost",# 如果数据库运行在本机,可以使用localhostport=3306,# MariaDB默认端口是3306database="你的数据库名"# 替换为你要链接的数据库名)p...
# Connect to MariaDB Platform try: conn = mariadb.connect( user="db_user", password="db_user_passwd", host="192.0.2.1", port=3306, database="employees" ) except mariadb.Error as e: print(f"Error connecting to MariaDB Platform: {e}") sys.exit(1) # Get Cursor cur = conn.cursor...
1. To connect to MariaDB Server using MariaDB Connector/Python, you have to import it first, just as you would any other module: import mariadb 2. Next, establish a database connection with the connect() function. The function takes a series of named arguments specifying your client creden...
importmariadb try: connection = mariadb.connect( user=username, password=password, host=mariadb_host, port=3306, database="sales" ) exceptmariadb.Erroraserr: print(f"An error occurred whilst connecting to MariaDB: {err}") 一旦连接,所有的查询都是通过游标对象执行的。你获得游标对象,然后用它来...
MariaDB [real_name]> use mysql Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MariaDB [mysql]> select user,host from user; +---+---+ | user | host | +---+---+ | newdb...
今天拿python写了一个后台连接MySQL(MariaDB)的页面,不过没想到居然会出现一个“被拒绝”的问题。 pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' ([WinError 10061] 由于目标计算机积极拒绝,无法连接。)")
import psycopg2 try: conn = psycopg2.connect("dbname='template1' user='dbuser' host='localhost' password='dbpass'") except: print "I am unable to connect to the database" cur = conn.cursor() cur.execute("""SELECT datname from pg_database""")优点 快速高效。支持多种连接、以及...
conn = mariadb.connect(**config, database='test') except mariadb.Error as err: print(err, file=sys.stderr) sys.exit(1) cur = conn.cursor() cur.execute("SHOW TABLES") for (tbl,) in cur.fetchall(): # pre-fetch all data to free up the cursor ...
connect(host="localhost", user="root", password="abcde", database="python", charset="utf8") sql="select * from "+str(uploaded_file.name).replace(".xls","") cursor = db.cursor() cursor.execute(sql) db.commit() df2=pd.read_sql(sql,con=db) st.success("数据库中的表格内容如下"...