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Python MySQL – Update Query

Last Updated : 09 Mar, 2020

A connector is employed when we have to use MySQL with other programming languages. The work of MySQL-connector is to provide access to MySQL Driver to the required language. Thus, it generates a connection between the programming language and the MySQL Server.

Update Clause

The update is used to change the existing values in a database. By using update a specific value can be corrected or updated. It only affects the data and not the structure of the table.
The basic advantage provided by this command is that it keeps the table accurate.

Syntax:

UPDATE tablename
SET ="new value"
WHERE ="old value";

The following programs will help you understand this better.
DATABASE IN USE:

python-mysql-update

Example 1: Program to update the age of student named Rishi Kumar.

# Python program to demonstrate 
# update clause 
  
  
import mysql.connector 
  
# Connecting to the Database 
mydb = mysql.connector.connect( 
  host ='localhost', 
  database ='College', 
  user ='root', 
) 
  
cs = mydb.cursor() 
  
# drop clause 
statement ="UPDATE STUDENT SET AGE = 23 WHERE Name ='Rishi Kumar'"
  
cs.execute(statement) 
mydb.commit() 
  
# Disconnecting from the database 
mydb.close() 

Output:

python-mysql-update1

Example 2: Program to correct the spelling of an Student named SK

# Python program to demonstrate 
# update clause 
  
  
import mysql.connector 
  
# Connecting to the Database 
mydb = mysql.connector.connect( 
  host ='localhost', 
  database ='College', 
  user ='root', 
) 
  
cs = mydb.cursor() 
  
# drop clause 
statement ="UPDATE STUDENT SET Name = 'S.K. Anirban' WHERE Name ='SK Anirban'"
  
cs.execute(statement) 
mydb.commit() 
  
# Disconnecting from the database 
mydb.close() 

Output:

python-mysql-update2

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