How to Get the Size of a Table in MySQL using Python?

Last Updated : 26 Dec, 2020

Prerequisite: Python: MySQL Create Table

In this article, we are going to see how to get the size of a table in MySQL using Python. Python allows the integration of a wide range of database servers with applications. A database interface is required to access a database from Python. MySQL Connector-Python module is an API in python for communicating with a MySQL database.

Approach:

Import module.
Make a connection request with the database.
Create an object for the database cursor.
Execute the following MySQL query:

SELECT table_name AS `Table`, round(((data_length + index_length) / 1024 / 1024), 2) `Size in MB` FROM information_schema.TABLES WHERE table_schema = ‘DataBase_name’ AND table_name = ‘Table_name’;

Example 1:

In this example we are using this database table with the following query;

Below is the implementation:

Python3

# Import required module 
import mysql.connector 
  
# Establish connection 
# to MySQL database 
mydb = mysql.connector.connect( 
    host="localhost", 
    user="root", 
    password="root123", 
    database="geeks") 
  
# Create cursor object 
mycursor = mydb.cursor() 
  
# Execute query 
query = "SELECT  table_name AS `Table`, \ 
        round(((data_length + index_length) \ 
        / 1024 / 1024), 2) `Size in MB` \ 
        FROM information_schema.TABLES \ 
        WHERE table_schema = 'Geeks' AND \ 
        table_name = 'Persons';" 
  
mycursor.execute(query) 
  
# Display size of each table 
myresult = mycursor.fetchall() 
  
for item in myresult: 
    print(item[0], "Size in MB: ", item[-1]) 

Output:

Example 2:

In this example, we are going to get all table sizes in a database.

Below is the implementation:

Python3

# Import required module 
import mysql.connector 
  
# Establish connection 
# to MySQL database 
mydb = mysql.connector.connect( 
    host="localhost", 
    user="root", 
    password="root123", 
    database="geeks") 
  
# Create cursor object 
mycursor = mydb.cursor() 
  
# Execute query 
query = "SELECT  TABLE_NAME AS `Table`, \ 
         ROUND(((DATA_LENGTH + INDEX_LENGTH) \ 
         / 1024 / 1024),2) AS `Size (MB)` \ 
         FROM information_schema.TABLES WHERE \ 
         TABLE_SCHEMA = 'Geeks' ORDER BY \ 
         (DATA_LENGTH + INDEX_LENGTH) DESC;" 
  
mycursor.execute(query) 
  
# Display size of each table 
myresult = mycursor.fetchall() 
  
for item in myresult: 
    print(item[0], "Size in MB: ", item[-1]) 