如何从批处理文件中运行.sql文件？

I am running sql server 2008 express and i need to schedule some stored procedures to run nightly...so i have built out these .sql files which i would want to run from .bat file...i need to know the command to execute these .sql files one by one and store their results i guess...can anyone help me out?I am running sql server 2008 express and i need