The case you have provided for using the TEXT::CSV module is very compelling and gives me new reason to dig deeper into the module pool for tools. Very helpful, much appreciated.

I managed to overlook the construction of @ArrayInMemory as an AoA which was the source of my confusion. In my zeal to complete a functional prototype I did not construct this array as an AoA, even though it would make sense from a structural standpoint to do so.

The array I am currently using looks something like this:

index1 - "field 1"/"field 2"/"field3"
index2 - "field 21"/field 22/"field23"
[download]

A fun exercise, for a learner like myself, might be to benchmark the various data structures for my particular application.

Thank you for all the detailed responses with various methods to move this data. I was shocked to see so few code examples using the pg_putcopydata handle, and I hope others might benefit from the exploration of this simple problem as well. PIPE! How does one (me) so easily forget about pipes and shell scripts? I feel like I should take down my list of UNIX tenants from my wall, in shame...

I work at a game development studio with many programmers who only have experience with Perl from their days in a classroom. I find communities such as Perl Monks to be invaluable in my pursuit of data wrangling, and thank you all again!