from golang-nuts:

"""

Greetings goers,

The Query method on sql.DB has the signature "func (db *DB)
Query(query string, args ...interface{})", but the documentation
mentions nothing of the "args" parameter. There are a couple of
instances of its use in Examples throughout the godocs, but it is
never explicitly explained.

Can anyone explain how exactly this works? (or perhaps point me to
some documentation I've overlooked)

Thanks,
S. C. Payson
"""