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Re^3: Processing ~1 Trillion records

by unclechris (Initiate)
on Oct 26, 2012 at 09:03 UTC ( #1001026=note: print w/replies, xml ) Need Help??


in reply to Re^2: Processing ~1 Trillion records
in thread Processing ~1 Trillion records

Why don't you have access at the database level?
my $dbh = DBI->connect("dbi:Oracle:host=server.domain.com; sid=sid; po +rt=1521", "username", "password")
This contains all the relevant details to connect via sqlplus or SQL Developer. I don't mean any disrespect, but extracting such a large amount of rows and processing them by hand (or any other tool) can only be several orders of magnitude slower than doing it in SQL or at least PL/SQL. Could you explain the requirement, even in abstract form, here or on Oracle's forum? I'm sure people would come up with suggestions for an improved query.

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