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="Lazyroar") # 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="Lazyroar") # 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]) |
Output:
