Database size calculation?

Question

What is the most accurate way to estimate how big a database would be with the following characteristics:

• MySQL
• 1 Table with three columns:
  • i

Answer 1

If you want to know the current size of a database you can try this:

SELECT table_schema "Database Name"
     , SUM(data_length + index_length) / (1024 * 1024) "Database Size in MB"
FROM information_schema.TABLES
GROUP BY table_schema