Get the size of MySQL/MariaDB tables

mysql-mariadb-table-size.sql

SELECT
  TABLE_NAME AS `Table`,
  ROUND((DATA_LENGTH ) / 1024 / 1024) AS `Data (MB)`,
  ROUND((INDEX_LENGTH) / 1024 / 1024) AS `Index (MB)`,
  ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS `Total (MB)`
FROM
  information_schema.TABLES
WHERE
  TABLE_SCHEMA = "my_db_name"
ORDER BY
  (DATA_LENGTH + INDEX_LENGTH)
DESC;