Hi Mark, > On 06. Oct, 2020, at 10:23, Mark <jxustnc@xxxxxxxxx> wrote: > > Actually, a single quotation will work. > \ir 'C:\\Program Files\\PostgreSQL\\12\\demo-big-en-20170815.sql' > But I don't know why a single quotation will work. > It would be very helpful if you guys can explain to me. because Microsoft had the glorious idea of putting a blank character into "Program Files". Quoting this will make the whole C:\...sql line one single word which is then passed to \i. Cheers, Paul