Find large MySQL tables

To identify the large tables, connect to the database as described in the Connect to the database article, and run the following command, where project_id is your Cloud project ID:

SELECT TABLE_NAME AS `Table`,
  ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS `Size (MB)`
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = "<project_id>"
ORDER BY (DATA_LENGTH + INDEX_LENGTH) DESC;

This would display the complete list of tables and their size. You can go through the list and identify which tables require attention because of the big size.