I got bored, so I added this: http://rjurneyopen.s3.amazonaws.com/simpledb.patch

to this: http://code.google.com/p/amazon-simpledb-cli/

Now you can do something like this:

$ ./simpledb select "select * from SimpleDBTest WHERE id>'0' ORDER BY id DESC"

And if you have data in that domain suitable to the query, you get something like this:

Item: base_id=1 Name: id, Value: 7, Name: song, Value: Super Deluxe Fly Crew, Name: station, Value: WKRP,

I think this is actually my first contribution to a FOSS project. Go me.