From d3704fdb09d79279c8dfde591087aa723af29891 Mon Sep 17 00:00:00 2001
From: alpaca-tc <alpaca-tc@alpaca.tc>
Date: Mon, 8 May 2017 02:00:20 +0900
Subject: [PATCH] Add effective index to subscriptions (#2885)
---
.../20170507141759_optimize_index_subscriptions.rb | 11 +++++++++++
db/schema.rb | 4 ++--
2 files changed, 13 insertions(+), 2 deletions(-)
create mode 100644 db/migrate/20170507141759_optimize_index_subscriptions.rb
diff --git a/db/migrate/20170507141759_optimize_index_subscriptions.rb b/db/migrate/20170507141759_optimize_index_subscriptions.rb
new file mode 100644
index 0000000000..26acd5c4d3
--- /dev/null
+++ b/db/migrate/20170507141759_optimize_index_subscriptions.rb
@@ -0,0 +1,11 @@
+class OptimizeIndexSubscriptions < ActiveRecord::Migration[5.0]
+ def up
+ add_index :subscriptions, [:account_id, :callback_url], unique: true
+ remove_index :subscriptions, [:callback_url, :account_id]
+ end
+
+ def down
+ add_index :subscriptions, [:callback_url, :account_id], unique: true
+ remove_index :subscriptions, [:account_id, :callback_url]
+ end
+end
diff --git a/db/schema.rb b/db/schema.rb
index f6a13671c8..21fce0df78 100644
--- a/db/schema.rb
+++ b/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: 20170425202925) do
+ActiveRecord::Schema.define(version: 20170507141759) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
@@ -288,7 +288,7 @@ ActiveRecord::Schema.define(version: 20170425202925) do
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.datetime "last_successful_delivery_at"
- t.index ["callback_url", "account_id"], name: "index_subscriptions_on_callback_url_and_account_id", unique: true, using: :btree
+ t.index ["account_id", "callback_url"], name: "index_subscriptions_on_account_id_and_callback_url", unique: true, using: :btree
end
create_table "tags", force: :cascade do |t|