insert into表示插入数据,数据库会检查主键,如果出现重复会报错; replace into表示插入替换数据,需求表中有Primary Key,或者唯一索引,如果表中已经存在数据,则用新数据替换,如果没有数据效果则和insert into一样; insert ignore表示,如果表中如果已经存在相同的记录,则忽略当前新数据。 SQL中插入一个记录需要的
# Insert rows into the MySQL Table insertStatement = "INSERT INTO Employee (id, LastName, FirstName, DepartmentCode) VALUES (1,\"Albert\",\"Einstein\",10)" cursorObject.execute(insertStatement) # Get the primary key value of the last inserted row ...
import pymysql # 1.连接数据库 # 数据默认返回的数据结果是元组类型,不易于操作 # 加上参数cursorclass=pymysql.cursors.DictCursor,fetchone()结果为字典,fetchall()结果为列表内嵌字典 db=pymysql.connect(host='localhost', user='root', password="181818",database='demo',cursorclass=pymysql.cursors.Dic...
Insert a record in the "customers" table: importmysql.connector mydb = mysql.connector.connect( host="localhost", user="yourusername", password="yourpassword", database="mydatabase" ) mycursor = mydb.cursor() sql ="INSERT INTO customers (name, address) VALUES (%s, %s)" ...
pipinstallmysql-connector-python pandas 1. 步骤2:连接到MySQL数据库 使用mysql-connector-python库连接到MySQL数据库。 importmysql.connector# 定义数据库连接参数config={'user':'your_username','password':'your_password','host':'localhost','database':'your_database','raise_on_warnings':True}# 连接...
The city table has five columns: ID, Name, CountryCode, District, and Info. Each value must match the data type of the column it represents. Insert a Partial Record The following example inserts values into the ID, Name, and CountryCode columns of the city table. ...
MySQL-python MySQL-3.23 through 5.5 and Python-2.4 through 2.7 are currently supported. Python-3.0 will be supported in a future release. 方式一:(推荐) # pip install MySQL-python 1. 方式二:(推荐) ## Ubuntu$sudoapt-getinstallpython-mysqldb## CentOS# yum install -y MySQL-python ...
c.execute("INSERT INTO table1 (name, age, height) values ('{0}','{1}','{2}')".format...
The city table has five columns: ID, Name, CountryCode, District, and Info. Each value must match the data type of the column it represents. Insert a Partial Record The following example inserts values into the ID, Name, and CountryCode columns of the city table. ...
```python import pymysql 连接数据库 conn = (host='localhost', user='root', password='password', db='mydb')创建游标对象 cursor = ()执行插入操作 sql = "INSERT INTO mytable (col1, col2, col3) VALUES (%s, %s, %s)"val = ("value1", "value2", "value3")(sql, val)提交更改 (...