How to get size of mysql database?

Question

How can I get the size of a MySQL database?

Assume the target database is called "B3".

Answer 1

Execute the following query and you will apparently get what you're expecting for:

SELECT table_schema "DB Name",
        ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
FROM information_schema.tables 
GROUP BY table_schema; 

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