Fix performance of percentile calculation for annual reports (#32765)

db/migrate/20241104082851_create_annual_report_statuses_per_account_counts.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class CreateAnnualReportStatusesPerAccountCounts < ActiveRecord::Migration[7.1]
+  def change
+    create_table :annual_report_statuses_per_account_counts do |t| # rubocop:disable Rails/CreateTableWithTimestamps
+      t.integer :year, null: false
+      t.bigint :account_id, null: false
+      t.bigint :statuses_count, null: false
+    end
+
+    add_index :annual_report_statuses_per_account_counts, [:year, :account_id], unique: true
+  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[7.1].define(version: 2024_10_22_214312) do
+ActiveRecord::Schema[7.1].define(version: 2024_11_04_082851) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -260,6 +260,13 @@ ActiveRecord::Schema[7.1].define(version: 2024_10_22_214312) do
     t.bigint "status_ids", array: true
   end
 
+  create_table "annual_report_statuses_per_account_counts", force: :cascade do |t|
+   t.integer "year", null: false
+   t.bigint "account_id", null: false
+   t.bigint "statuses_count", null: false
+   t.index ["year", "account_id"], name: "idx_on_year_account_id_ff3e167cef", unique: true
+  end
+
   create_table "appeals", force: :cascade do |t|
     t.bigint "account_id", null: false
     t.bigint "account_warning_id", null: false