Using sql orderby clause in Python programming language

One of the key features of SQL is the `ORDER BY` clause, which allows you to sort the results of a query based on one or more columns. In this tutorial, we will explore how to use the `ORDER BY` clause in Python to sort data stored in a SQL database using the `sqlite3` module in Python. We will cover the basics of connecting to a database, creating tables, inserting data, and performing queries with `ORDER BY` clause.

What is Sql Orderby Clause :

• The sql orderby clause allows you to sort the results of a query by one or more columns. 
• The orderby clause is added to the end of a query. 
• Orderby clause can be used to :
  • sort the results in ascending order
  • sort the results in descending order
  • sort the results by multiple columns
• Ascending order : The following query sorts the results by the last_name column in ascending order
  •  SELECT * FROM contacts ORDER BY last_name; 
• Descending order : We can also sort the results in descending order by using the DESC keyword: 
  •  SELECT * FROM contacts ORDER BY last_name DESC;  
• Multiple columns : We can sort the results by multiple columns by separating the column names with a comma: 
  •  SELECT * FROM contacts ORDER BY last_name, first_name;  

How to use sql orderby clause in MySQL with Python :

• Follow the steps given below to use sql orderby clause in MySQL with python 
  • Step 1: Install the required Packages
  • Step 2: Establishing a Connection to the MySQL Server
  • Step 3: Create a Cursor Object
  • Step 4: use sql orderby clause

Step 1: Install the Required Packages

• The first step is to ensure that you have installed the required packages on your machine.
• The most popular packages for connecting to MySQL in Python are 
  • mysql-connector and 
  • PyMySQL.
• You can install these packages using pip through the command line.
• Code Sample :

!pip install mysql-connector-python
!pip install PyMySQL

Step 2: Connect to the MySQL Database

• To create a new database in MySQL using Python, we must have a connection to the MySQL server.
• To connect to a MySQL server in Python we can use either 
  • mysql.connector or 
  • PyMySQL package 
• We need to provide the necessary connection parameters to establish the connection.
• We need to pass the following parameters to the Connection object: 
  • host : the hostname  of the MySQL server user 
  • user : username for the MySQL account
  • password : password for the MySQL account database
  • database : The name of the database to connect to
• To study package specific code for connecting to MySQL read our tutorial on connecting to MySQL server.

Step 3: Create a Cursor Object

• After establishing a connection to the MySQL server, your next step is to create a cursor object.
• This is done using the cursor() method provided by mysql.connector or PyMySQL.
• Code Sample :

cursor = mydb.cursor()

Step 4: Use sql orderby clause

• To sort the results of a  SELECT  statement in a MySQL table using Python, use the  ORDER BY  clause.
  • Use the  ASC  keyword to sort the results in ascending order.
  • Use the  DESC  keyword to sort the results in descending order.
• Code Sample :

query = "SELECT * FROM employees ORDER BY name ASC"
cursor.execute(query)
result = cursor.fetchall()
for row in result:
   print(row)