I really am a database newbie, so please pardon me if what I'm saying sounds absolutely dumb.
Here's a sample slice of 1-minute data, in a file called 'slice.csv':
'2008-12-01', 10:21:00, 'A', 17.820000, 17.830000, 17.780000, 17.800000, 1600, 1400
'2008-12-01', 10:22:00, 'A', 17.800000...