how-do-i-use-python-to-update-multiple-columns-in-a-mysql-database.md

How do I use Python to update multiple columns in a MySQL database?

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You can use Python to update multiple columns in a MySQL database by using the UPDATE command. For example, the following code will update the name and age columns of the users table:

import mysql.connector

mydb = mysql.connector.connect(
  host="localhost",
  user="user",
  passwd="password",
  database="mydatabase"
)

mycursor = mydb.cursor()

sql = "UPDATE users SET name = 'John', age = '32' WHERE name = 'Peter'"

mycursor.execute(sql)

mydb.commit()

print(mycursor.rowcount, "record(s) affected")

Output example

1 record(s) affected

Explanation of the code:

1. import mysql.connector: This imports the MySQL Connector Python module in order to establish a connection to the database.
2. mydb = mysql.connector.connect(): This establishes a connection to the database using the credentials provided as parameters.
3. mycursor = mydb.cursor(): This creates a cursor object which is used to execute the SQL statements.
4. sql = "UPDATE users SET name = 'John', age = '32' WHERE name = 'Peter'": This is the SQL statement used to update the name and age columns of the users table.
5. mycursor.execute(sql): This executes the SQL statement.
6. mydb.commit(): This commits the changes to the database.
7. print(mycursor.rowcount, "record(s) affected"): This prints the number of records affected by the query.

## Helpful links

• MySQL Connector/Python Developer Guide
• MySQL UPDATE Statement

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