Binding and counting posts with tags

The tables you created in the previous exercise have been preloaded as questions_with_tags and answers_with_tags. First, you'll want to combine these tables into a single table called posts_with_tags. Once the information is consolidated into a single table, you can add more information by creating a date variable using the lubridate package, which has been preloaded for you.

questions_with_tags <- questions %>%
  inner_join(question_tags, by = c("id" = "question_id")) %>%
  inner_join(tags, by = c("tag_id" = "id"))

answers_with_tags <- answers %>%
  inner_join(question_tags, by = "question_id") %>%
  inner_join(tags, by = c("tag_id" = "id"))

Combine the questions_with_tags and answers_with_tags tables into posts_with_tags.
Add a year column to the posts_with_tags table, then aggregate to count posts by type, year, and tag_name.

Exercise

Binding and counting posts with tags

Instructions