[ajtaylor]

With the upcoming release of Pg 9.3, I've been reading a lot more posts and articles about the FDW (foreign data wrapper) capabilities. I had not considered all the things FDW can do, but I'm getting more and more excited the further I get into it.

For instance, at $work we have a bunch of tables which are archives of raw click data. They are taking up quite a bit of space on disk, which we'd like to reclaim. Keeping the raw data around is good, since I want to create a summary table and you can't recreate raw data from summaries. The idea was to export the table data as CSV, and then when I had the time to for messing around with summaries I'd reload the data. With FDW I can leave the data as CSV and read it just like it was in a proper DB table. Win!

Or even better, again at $work we use Mysql. But I hate it because SQL strict mode isn't enabled and mysql does really stupid things with my data in "normal" mode. I can't safely turn on strict at this point because I don't have the time for testing everything. I also really like Pg and would love to switch. But again, I don't have the time to do it. What I've been thinking about is using the FDW capabilities (in particular the upcoming writable FDW in 9.3) as a way to safely and slowly migrate DB platforms. It's only an idea in my head right now, but it's an intriguing one.