I'm looking to pull a list of values that are used in a particular field in our sf.com data.  Is there any function or command that will pull only one of each value?

Also, Is there any books out there on soql?  The closest thing I have is the force.com cookbook.

Thanks!

I'm looking to pull a list of values that are used in a particular field in our sf.com data.  Is there any function or command that will pull only one of each value?

Also, Is there any books out there on soql?  The closest thing I have is the force.com cookbook.

Thanks!