I have an entry ID, which `popularity` has to be increased by one.

A simple solution looks like this:

```
Tag.find(id).increment!(:popularity)

```

However it doesn't seem to be very efficient, because I select the entire entry (\*) from the database (even though I don't need it at all) and then do the second query to update it.

Is there a more efficient way to do this? I think, one update statement (without "select") should be enough, but how do I write this?