Show sql database size

SELECT table_schema "Data Base Name",
    sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB",
    sum( data_free )/ 1024 / 1024 "Free Space in MB"
FROM information_schema.TABLES
GROUP BY table_schema ; 

Thanks to: http://stackoverflow.com/questions/14714750/how-to-get-true-size-of-mysql-database