<reponame>luis2ra/py3-00-w3schools
'''
Python MySQL Update Table


Update Table

You can update existing records in a table by using the "UPDATE" statement.

Important!: Notice the statement: mydb.commit(). It is required to make the changes, otherwise no changes are made to the table.

Notice the WHERE clause in the UPDATE syntax: The WHERE clause specifies which record or records that should be updated. If you omit the WHERE clause, all records will be updated!


Prevent SQL Injection

It is considered a good practice to escape the values of any query, also in update statements.

This is to prevent SQL injections, which is a common web hacking technique to destroy or misuse your database.

The mysql.connector module uses the placeholder %s to escape values in the delete statement.

'''
import mysql.connector

mydb = mysql.connector.connect(
    host="localhost",
    user="userdemo",
    password="<PASSWORD>",
    database="mydatabase1"
)

mycursor = mydb.cursor()

sql = "UPDATE customers SET address = 'Canyon 123' WHERE address = 'Valley 345'"

mycursor.execute(sql)

mydb.commit()

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