Show the top 25 MySQL database tables by size on disk

db_size_check.sql

SELECT
    CONCAT(table_schema, '.', table_name) as 'table',
    CONCAT(ROUND(table_rows / 1000000, 2), 'M') rows,
    CONCAT(ROUND(data_length / (1024 * 1024 * 1024), 2), 'G') data,
    CONCAT(ROUND(index_length / (1024 * 1024 * 1024), 2), 'G') idx,
    CONCAT(ROUND((data_length + index_length) / (1024 * 1024 * 1024), 2), 'G') total_size,
    ROUND(index_length / data_length, 2) idxfrac
FROM information_schema.TABLES
-- WHERE table_schema = 'some_db'
ORDER BY data_length + index_length DESC
LIMIT 25;