Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Filter PeopleController#index on thieves #1

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions app/controllers/people_controller.rb
Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
class PeopleController < ApplicationController
def index
@people = Person.where(occupation: 'thief')
render @people

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

  • Index Scan: mysql reads 500000 rows from people via index_people_on_occupation (occupation).
  • Results: mysql returns 22.0mb (500000 rows) to the client.
  • Estimated query time: 8.72s

end
end