Show approx sizes of tables in mysql db

sizes.sql

SELECT table_name AS "Tables",                                                                                                                                                                                      
round(((data_length + index_length) / 1024 / 1024), 2) "sz MB"                                                                                                                                                      
FROM information_schema.TABLES                                                                                                                                                                                      
WHERE table_schema = "monitor"                                                                                                                                                                                      
ORDER BY (data_length + index_length) DESC;