Get MySQL databases size

Get MySQL databases & tables sizes

-- full databases resume
SELECT table_schema, sum(data_length + index_length)/1024/1024 AS used_space_mb FROM information_schema.TABLES GROUP BY table_schema;

-- single database table sizes
SELECT 
    table_schema AS database_name,
    table_name,
    ROUND((data_length + index_length) / 1024 / 1024, 2) AS total_size_mb,
    ROUND(data_length / 1024 / 1024, 2) AS data_size_mb,
    ROUND(index_length / 1024 / 1024, 2) AS index_size_mb,
    table_rows
FROM information_schema.tables
WHERE table_schema = 'your_database_name'
ORDER BY total_size_mb DESC;