priv/repo/migrations/20171017235433_add_missing_github_id_indexes.exs
defmodule CodeCorps.Repo.Migrations.AddMissingGithubIdIndexes do
use Ecto.Migration
def change do
create index(:github_comments, [:github_id], unique: true)
create index(:github_issues, [:github_id], unique: true)
create index(:github_repos, [:github_id], unique: true)
end
end