hire_end = datetime.date(1999,12,31) cursor.execute(query, (hire_start, hire_end))for(first_name, last_name, hire_date)incursor:print("{}, {} was hired on {:%d %b %Y}".format( last_name, first_name, hire_date)) cursor.close() cnx.close()...
cnn = mysql.connector.connect(**config)exceptmysql.connector.Error as e:print('connect fails!{}'.format(e)) cursor =cnn.cursor()try: sql_query ='select name,age from stu ;'cursor.execute(sql_query)for name, ageincursor:print(name, age)exceptmysql.connector.Error as e:print('query error!
查询数据是数据库操作中最常见的需求之一。使用mysql-connector-python,我们可以轻松地执行SELECT语句: 代码语言:javascript 复制 defselect_data(connection,query):cursor=connection.cursor()try:cursor.execute(query)result=cursor.fetchall()forrowinresult:print(row)except Errorase:print(f"The error '{e}' occ...
config = { "database": "data", "username": "root", "password": "123456", "host": "127.0.0.1", "port": 3306 } connect = mysql.connector.Connect(**config) cursor = connect.cursor(dictionary=True) while True: cursor.execute("SELECT * FROM person") result = cursor.fetchall() # fe...
,password='sz123',host='192.168.0.77',port='3306', database='dams')cursor = cnx.cursor(cursorclass = MySQLdb.cursors.DictCursor)//注意这里：cursorclass = MySQLdb.cursors.DictCursorquery = "select hotel0,hotel1 from cd_hotel limit 2"cursor.execute(query)for hotelrs in ...
#mycursor.execute("SELECT * FROM sites LIMIT 3") #通过 "LIMIT" 语句设置查询的数据量#mycursor.execute("SELECT * FROM sites LIMIT 3 OFFSET 1") 使用的关键字是 OFFSET指定起始位置mycursor.execute(sql) myresult = mycursor.fetchall() for x in myresult: print(x) 1. 2. 3. 4. 5. 6....
for x in myresult: print(x) ``` 上述代码可用于查询“customers”表中的所有数据。使用mycursor.execute()方法执行SQL语句,并将结果存储在myresult变量中。最后遍历查询结果并打印到控制台。 4.插入数据 插入数据是MySQL Connector库的另一个重要功能。插入数据需要指定数据要插入到的表格和插入的数据内容。 ``...
1、查询价格不是800的所有商品(where/!=) SELECT * FROM product WHERE price !...* FROM product WHERE price >= 200 AND price <=1000; 3、查询商品价格是200或800的所有商品(or、in) SELECT * FROM...
由于第一个查询将无法成功执行,因此应该引发 mysql.connector.errors.ProgrammingError 异常。但是,如果您颠倒查询的顺序,就不会遇到任何异常,因为查询将成功执行: query = """CREATE TABLE test (first_col text); DROP TABLE test""" # Loop through the results for rslt in cursor.execute(query, multi=True...
(**config)cursor = connect.cursor(dictionary=True)while True:cursor.execute("SELECT * FROM person")result = cursor.fetchall() # 获取所有记录time.sleep(2)print(result)print(connect.in_transaction)# 如果不commit,数据库新增、删除、修改的数据没法查询到# connect.commit()# 关闭游标和连接cursor....