import mysql command line without database
mysql -u username -p database_name < file.sql
Note-1: It is better to use the full path of the SQL file file.sql.
Note-2: Use -R and --triggers to keep the routines and triggers of original database.
They are not copied by default.
Note-3 You may have to create the (empty) database from mysql if it
doesn't exist already and the exported SQL don't
contain CREATE DATABASE (exported with --no-create-db or -n option),
before you can import it.