SQLSplitter
If you need to split an SQL file into smaller chunks, I found this little utility called sqlsplitter that will do exactly that. You can download it from http://rodo.nl/index.php?page=mysql-splitter.
Pretty simple use, stick your SQL file into a directory along with the executable and then run:
sqlsplitter your-sql-filename.sql 5000000
Where 5000000 is the number of bytes you want to split files into.
Found this useful? Everything here is free and stays that way. If it saved you an afternoon, you can buy me a coffee.