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MySQL
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mysql.md

Size DB

ALL

mysql> SELECT sum( data_length + index_length ) / (1024 * 1024)  "Size in MB" FROM information_schema.TABLES;

By DB

SELECT table_schema "Data Base Name", sum( data_length + index_length ) / (1024 * 1024) as Size FROM information_schema.TABLES GROUP BY table_schema;

Dump and Restore

Dump all databases and restore one

Dump

mysqldump -u [user] -p --all-databases > [dump_name].sql

Restore one database from dump

mysql -D [mydatabase] -o < [dump_name].sql
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