mysqldump: move backup restore examples to mysql

pages/common/mysql.md

@@ -22,3 +22,11 @@
 - Execute SQL statements in a script file (batch file):
 
 `mysql -e "source {{filename.sql}}" {{database_name}}`
+
+- Restore a database from a backup (user will be prompted for a password):
+
+`mysql --user {{user}} --password {{database_name}} < {{path/to/backup.sql}}`
+
+- Restore all databases from a backup (user will be prompted for a password):
+
+`mysql --user {{user}} --password < {{path/to/backup.sql}}`