From 5a1034cab6ada90e76c1decf8e9ca847e2bf2c68 Mon Sep 17 00:00:00 2001
From: rhymes <rhymes@hey.com>
Date: Fri, 30 Apr 2021 15:02:27 +0200
Subject: [PATCH] [Search 2.0] Add index on articles.comments_count (#13599)

---
 ...094954_add_index_on_articles_comments_count.rb | 15 +++++++++++++++
 db/schema.rb                                      |  3 ++-
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 db/migrate/20210430094954_add_index_on_articles_comments_count.rb

diff --git a/db/migrate/20210430094954_add_index_on_articles_comments_count.rb b/db/migrate/20210430094954_add_index_on_articles_comments_count.rb
new file mode 100644
index 000000000..684a0528c
--- /dev/null
+++ b/db/migrate/20210430094954_add_index_on_articles_comments_count.rb
@@ -0,0 +1,15 @@
+class AddIndexOnArticlesCommentsCount < ActiveRecord::Migration[6.1]
+  disable_ddl_transaction!
+
+  def up
+    return if index_exists?(:articles, :comments_count)
+
+    add_index :articles, :comments_count, algorithm: :concurrently
+  end
+
+  def down
+    return unless index_exists?(:articles, :comments_count)
+
+    remove_index :articles, column: :comments_count, algorithm: :concurrently
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 30fe57b66..da6d2da3a 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: 2021_04_29_094116) do
+ActiveRecord::Schema.define(version: 2021_04_30_094954) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "citext"
@@ -158,6 +158,7 @@ ActiveRecord::Schema.define(version: 2021_04_29_094116) do
     t.index ["canonical_url"], name: "index_articles_on_canonical_url", unique: true
     t.index ["collection_id"], name: "index_articles_on_collection_id"
     t.index ["comment_score"], name: "index_articles_on_comment_score"
+    t.index ["comments_count"], name: "index_articles_on_comments_count"
     t.index ["featured_number"], name: "index_articles_on_featured_number"
     t.index ["feed_source_url"], name: "index_articles_on_feed_source_url", unique: true
     t.index ["hotness_score"], name: "index_articles_on_hotness_score"