chore: Add missing indexes for attachments table (#5588)

- index for attachments table
- index for conversations table

app/models/attachment.rb

@@ -14,6 +14,11 @@
 #  account_id       :integer          not null
 #  message_id       :integer          not null
 #
+# Indexes
+#
+#  index_attachments_on_account_id  (account_id)
+#  index_attachments_on_message_id  (message_id)
+#
 
 class Attachment < ApplicationRecord
   include Rails.application.routes.url_helpers

app/models/conversation.rb

@@ -31,8 +31,10 @@
 #  index_conversations_on_account_id_and_display_id   (account_id,display_id) UNIQUE
 #  index_conversations_on_assignee_id_and_account_id  (assignee_id,account_id)
 #  index_conversations_on_campaign_id                 (campaign_id)
+#  index_conversations_on_contact_id                  (contact_id)
 #  index_conversations_on_contact_inbox_id            (contact_inbox_id)
 #  index_conversations_on_first_reply_created_at      (first_reply_created_at)
+#  index_conversations_on_inbox_id                    (inbox_id)
 #  index_conversations_on_last_activity_at            (last_activity_at)
 #  index_conversations_on_status_and_account_id       (status,account_id)
 #  index_conversations_on_team_id                     (team_id)

db/migrate/20221010212946_add_index_to_message_attachments.rb

@@ -0,0 +1,8 @@
+class AddIndexToMessageAttachments < ActiveRecord::Migration[6.1]
+  def change
+    add_index :attachments, :account_id
+    add_index :attachments, :message_id
+    add_index :conversations, :contact_id
+    add_index :conversations, :inbox_id
+  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: 2022_09_30_025317) do
+ActiveRecord::Schema.define(version: 2022_10_10_212946) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"
@@ -148,6 +148,8 @@ ActiveRecord::Schema.define(version: 2022_09_30_025317) do
     t.datetime "updated_at", null: false
     t.string "fallback_title"
     t.string "extension"
+    t.index ["account_id"], name: "index_attachments_on_account_id"
+    t.index ["message_id"], name: "index_attachments_on_message_id"
   end
 
   create_table "automation_rules", force: :cascade do |t|
@@ -410,8 +412,10 @@ ActiveRecord::Schema.define(version: 2022_09_30_025317) do
     t.index ["account_id"], name: "index_conversations_on_account_id"
     t.index ["assignee_id", "account_id"], name: "index_conversations_on_assignee_id_and_account_id"
     t.index ["campaign_id"], name: "index_conversations_on_campaign_id"
+    t.index ["contact_id"], name: "index_conversations_on_contact_id"
     t.index ["contact_inbox_id"], name: "index_conversations_on_contact_inbox_id"
     t.index ["first_reply_created_at"], name: "index_conversations_on_first_reply_created_at"
+    t.index ["inbox_id"], name: "index_conversations_on_inbox_id"
     t.index ["last_activity_at"], name: "index_conversations_on_last_activity_at"
     t.index ["status", "account_id"], name: "index_conversations_on_status_and_account_id"
     t.index ["team_id"], name: "index_conversations_on_team_id"