I need to to an update with a a join. Is there a better way than this?
Token.connection.update "UPDATE tokens INNER JOIN items_tokens ON tokens.id =
items_tokens.token_id SET field=field-1 WHERE items_tokens.item_id =
There are possibly hundreds of tokens for an item (actually words and word
pairs in RSS feed descriptions), so instantiating a couple of hundred AR for
each click is too CPU intensive.