Merge pull request #559 from dxw/add-index-to-submissions-created-at

Add missing index on 'submissions.created_at'

db/migrate/20191204094848_add_index_on_submissions_created_at.rb

@@ -0,0 +1,10 @@
+class AddIndexOnSubmissionsCreatedAt < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    add_index :submissions,
+              :created_at,
+              order: { created_at: :desc },
+              algorithm: :concurrently
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_10_23_072354) do
+ActiveRecord::Schema.define(version: 2019_12_04_094848) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "citext"
@@ -172,6 +172,7 @@
     t.decimal "management_charge_total", precision: 18, scale: 4
     t.decimal "invoice_total", precision: 18, scale: 4
     t.index ["aasm_state"], name: "index_submissions_on_aasm_state"
+    t.index ["created_at"], name: "index_submissions_on_created_at", order: :desc
     t.index ["created_by_id"], name: "index_submissions_on_created_by_id"
     t.index ["framework_id"], name: "index_submissions_on_framework_id"
     t.index ["submitted_by_id"], name: "index_submissions_on_submitted_by_id"