Useful MySQL Queries

Useful_MySQL_Queries.sql

# Display Storage Space used by Tables in a MySQL Database called "DiagDomain":
SELECT table_name AS "Tables", round(((data_length + index_length)/1024/1024/1024), 2) "Size in GB" FROM information_schema.TABLES WHERE table_schema = "DiagDomain" ORDER BY (data_length + index_length) DESC;

# Display Storage Space used by all MySQL Databases:
SELECT table_schema "database", sum(data_length + index_length)/1024/1024/1024 "Size in GB" FROM information_schema.TABLES GROUP BY table_schema;