Is it Mysql bug?
hi,I have a vbulletin database file, it contains inside it a lot of images and another information, it size is around 490M. when i use the command [[ mysql -uusername -ppassword dbname< filename.sql]] to load the file to mysql program, the size decrease to around 320M

why is that? Is it mysql Bug?

i have search in google about this problem but i did not any similar problem.
