Python MySQL - Where Clause

Where clause is used in MySQL database to filter the data as per the condition required. You can fetch, delete or update a particular set of data in MySQL database by using where clause.
Syntax
 

SELECT column1, column2, .... columnN FROM [TABLE NAME] WHERE [CONDITION]; 
 

The above syntax is used for displaying a certain set of data following the condition.
Example: Consider the following database named college and having a table name as a student.
Schema of the database:
 

  
Database:
 

Where Clause In Python

Steps to use where clause in Python is: 
 

1. First form a connection between MySQL and Python program. It is done by importing mysql.connector package and using mysql.connector.connect() method, for passing the user name, password, host (optional default: localhost) and, database (optional) as parameters to it.
2. Now, create a cursor object on the connection object created above by using cursor() method. A database cursor is a control structure that enables traversal over the records in a database.
3. Then, execute the where clause statement by passing it through execute() method.

import mysql.connector #Establishing connection conn = mysql.connector.connect(user='your_username', host='localhost', password ='your_password', database='College') # Creating a cursor object using  # the cursor() method mycursor = conn.cursor(); # SQL Query sql = "select * from Student where Roll_no >= 3;" # Executing query mycursor.execute(sql) myresult = mycursor.fetchall() for x in myresult: print(x) # Closing the connection conn.close() 

OUTPUT: