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)
Questo esercizio fa parte del corso
Joining Data with dplyr
Istruzioni dell'esercizio
- In order to join in the themes, you'll first need to combine the
inventory_parts_joinedandsetstables. - Then, combine the first join with the
themestable, using the suffix argument to clarify which table eachnamecame from ("_set"or"_theme").
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Start with inventory_parts_joined table
inventory_parts_joined %>%
# Combine with the sets table
___ %>%
# Combine with the themes table
___