Python MySQL 插入表

拼搏现实的明天。 2023-10-02 17:30 5阅读 0赞

[Python MySQL 插入表 - 吴吃辣 - 博客园][Python MySQL _ - _ -]

## [Python MySQL 插入表][Python MySQL _ - _ -] ##

--------------------

### 章节 ###

*  [Python MySQL 入门][Python MySQL]
 *  [Python MySQL 创建数据库][Python MySQL 1]
 *  [Python MySQL 创建表][Python MySQL 2]
 *  [Python MySQL 插入表][Python MySQL 3]
 *  [Python MySQL Select][]
 *  [Python MySQL Where][]
 *  [Python MySQL Order By][]
 *  [Python MySQL Delete][]
 *  [Python MySQL 删除表][Python MySQL 4]
 *  [Python MySQL Update][]
 *  [Python MySQL Limit][]
 *  [Python MySQL Join][]

--------------------

### 插入表 ###

要把记录插入到MySQL中的表中，使用“INSERT INTO”语句。

**示例**

在“customers”表中插入一条记录:

import mysql.connector
    
    mydb = mysql.connector.connect(
      host="localhost",
      user="你的用户名",
      passwd="你的密码",
      database="mydatabase"
    )
    
    mycursor = mydb.cursor()
    
    sql = "INSERT INTO customers (name, address) VALUES (%s, %s)"
    val = ("John", "Highway 21")
    mycursor.execute(sql, val)
    
    mydb.commit()
    
    print(mycursor.rowcount, "条记录已插入")

> **注意**: 调用`mydb.commit()`语句提交修改，否则修改不会生效。

### 插入多行 ###

要将多行插入到表中，使用`executemany()`方法。

`executemany()`方法的第二个参数是一个元组列表，包含了要插入的数据:

**示例**

填写“客户”表格:

import mysql.connector
    
    mydb = mysql.connector.connect(
      host="localhost",
      user="你的用户名",
      passwd="你的密码",
      database="mydatabase"
    )
    
    mycursor = mydb.cursor()
    
    sql = "INSERT INTO customers (name, address) VALUES (%s, %s)"
    val = [
      ('Peter', 'Lowstreet 4'),
      ('Amy', 'Apple st 652'),
      ('Hannah', 'Mountain 21'),
      ('Michael', 'Valley 345'),
      ('Sandy', 'Ocean blvd 2'),
      ('Betty', 'Green Grass 1'),
      ('Richard', 'Sky st 331'),
      ('Susan', 'One way 98'),
      ('Vicky', 'Yellow Garden 2'),
      ('Ben', 'Park Lane 38'),
      ('William', 'Central st 954'),
      ('Chuck', 'Main Road 989'),
      ('Viola', 'Sideway 1633')
    ]
    
    mycursor.executemany(sql, val)
    
    mydb.commit()
    
    print(mycursor.rowcount, " 条已经插入")

### 获取插入行的ID ###

可以通过查询cursor对象，获得刚才插入行的id。

> **注意**: 如果插入多行，则返回最后插入行的id。

**示例**

插入一行，并返回ID:

import mysql.connector
    
    mydb = mysql.connector.connect(
      host="localhost",
      user="你的用户名",
      passwd="你的密码",
      database="mydatabase"
    )
    
    mycursor = mydb.cursor()
    
    sql = "INSERT INTO customers (name, address) VALUES (%s, %s)"
    val = ("Michelle", "Blue Village")
    mycursor.execute(sql, val)
    
    mydb.commit()
    
    print("1 条记录插入, ID:", mycursor.lastrowid)

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[Python MySQL 插入表 - 吴吃辣 - 博客园][Python MySQL _ - _ -]

[Python MySQL _ - _ -]: https://www.cnblogs.com/jinbuqi/p/11588806.html
[Python MySQL]: https://www.qikegu.com/docs/3240
[Python MySQL 1]: https://www.qikegu.com/docs/3243
[Python MySQL 2]: https://www.qikegu.com/docs/3246
[Python MySQL 3]: https://www.qikegu.com/docs/3248
[Python MySQL Select]: https://www.qikegu.com/docs/3250
[Python MySQL Where]: https://www.qikegu.com/docs/3252
[Python MySQL Order By]: https://www.qikegu.com/docs/3254
[Python MySQL Delete]: https://www.qikegu.com/docs/3256
[Python MySQL 4]: https://www.qikegu.com/docs/3259
[Python MySQL Update]: https://www.qikegu.com/docs/3261
[Python MySQL Limit]: https://www.qikegu.com/docs/3263
[Python MySQL Join]: https://www.qikegu.com/docs/3265