How to import an SQL file using the command line in MySQL?
 I have a .sql file with an export from phpMyAdmin .  I want to import it into a different server using the command line.  
 I have a Windows Server 2008 R2 installation.  I placed the .sql file on the C drive , and I tried this command  
database_name < file.sql
It is not working I get syntax errors.
Try:
mysql -u username -p database_name < file.sql
Check MySQL Options.
 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.  
A common use of mysqldump is for making a backup of an entire database:
shell> mysqldump db_name > backup-file.sql
You can load the dump file back into the server like this:
UNIX
shell> mysql db_name < backup-file.sql
The same in Windows command prompt:
mysql -p -u[user] [database] < backup-file.sql
PowerShell
C:> cmd.exe /c "mysql -u root -p db_name < backup-file.sql"
MySQL command line
mysql> use db_name;
mysql> source backup-file.sql;
 Regarding the time taken for importing huge files: most importantly, it takes more time because the default setting of MySQL is autocommit = true .  You must set that off before importing your file and then check how import works like a gem.  
You just need to do the following thing:
mysql> use db_name;
mysql> SET autocommit=0 ; source the_sql_file.sql ; COMMIT ;
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