Combien chaque enregistrement de la base de données MySQL prend de l'espace de disque
SELECT table_schema as 'Database Name',
sum( data_length + index_length ) as 'Size-Bytes',
round((sum(data_length + index_length) / 1024 / 1024), 4) as 'Size-MB'
FROM information_schema.TABLES
GROUP BY table_schema
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