Richard Huxton <dev@archonet.com> writes:
> Hmm - I can't think how that could reach 1.9GB in size, especially since
> it has to be something different between a "raw" connection and how ODBC
> is doing things.
Try turning on log_statement to see what's really being executed.
I seem to recall reading that Access thinks it can mangle your SQL
as it sees fit.
regards, tom lane