Differences between Batman and Star Wars

In the video, you compared two sets. Now, you'll compare two themes, each of which is made up of many sets.

First, you'll need to join in the themes. Recall that doing so requires going through the sets first. You'll use the inventory_parts_joined table from the video, which is already available to you in the console.

inventory_parts_joined <- inventories %>%
  inner_join(inventory_parts, by = c("id" = "inventory_id")) %>%
  arrange(desc(quantity)) %>%
  select(-id, -version)

In order to join in the themes, you'll first need to combine the inventory_parts_joined and sets tables. Keep only the observations that have a match in both tables.
Then, combine the first join with the themes table, using the suffix argument to clarify which table each name came from ("_set" or "_theme"). Keep only the observations that have a match in both tables.

If your exercise is timing out, you are likely joining the wrong tables, causing the join result to be too big! Check your code carefully!

Exercise

Differences between Batman and Star Wars

Instructions