Size of tables in a SQL DB. Source: https://stackoverflow.com/a/46143816

table-sizes.sql

SELECT
  TABLE_NAME AS `Table`,
  ROUND(((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024),2) AS `Size (MB)`
FROM
  information_schema.TABLES
WHERE
  TABLE_SCHEMA = "database_name"
#AND
#  TABLE_NAME = "table_name"
ORDER BY
  (DATA_LENGTH + INDEX_LENGTH)
DESC;