Make indexes on ready_executions to be covering indexes for the polli…

…ng query

Since we select job_id and queue_name.

test/dummy/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: 2023_11_02_184135) do
+ActiveRecord::Schema[7.1].define(version: 2023_11_15_211044) do
  create_table "job_results", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
  t.string "queue_name"
  t.string "status"
@@ -70,8 +70,8 @@
  t.integer "priority", default: 0, null: false
  t.datetime "created_at", null: false
  t.index ["job_id"], name: "index_solid_queue_ready_executions_on_job_id", unique: true
- t.index ["priority"], name: "index_solid_queue_ready_executions_on_priority"
- t.index ["queue_name", "priority"], name: "index_solid_queue_ready_executions"
+ t.index ["priority", "job_id"], name: "index_solid_queue_poll_all"
+ t.index ["queue_name", "priority", "job_id"], name: "index_solid_queue_poll_by_queue"
  end
 
  create_table "solid_queue_scheduled_executions", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|