Find the size of mysql database
From MyWiki
If you run the query which is given below in MySQL Query Browser then you will get the two columns first will display the Data Base Name and the second will display the Data Base Size in MB.
SELECT table_schema "Data Base Name", sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB"
FROM information_schema.TABLES GROUP BY table_schema ;
