Remove redundant db indexes (#4828)

Author: coalest

db/migrate/20241204133041_remove_index_on_name_from_counties_table.rb

@@ -0,0 +1,7 @@
+class RemoveIndexOnNameFromCountiesTable < ActiveRecord::Migration[7.1]
+  disable_ddl_transaction!
+
+  def change
+    remove_index :counties, :name, algorithm: :concurrently
+  end
+end

db/migrate/20241204133506_remove_index_on_organization_id_from_events_table.rb

@@ -0,0 +1,7 @@
+class RemoveIndexOnOrganizationIdFromEventsTable < ActiveRecord::Migration[7.1]
+  disable_ddl_transaction!
+
+  def change
+    remove_index :events, :organization_id, algorithm: :concurrently
+  end
+end

db/migrate/20241204133715_remove_index_on_user_id_from_users_roles_table.rb

@@ -0,0 +1,7 @@
+class RemoveIndexOnUserIdFromUsersRolesTable < ActiveRecord::Migration[7.1]
+  disable_ddl_transaction!
+
+  def change
+    remove_index :users_roles, :user_id, algorithm: :concurrently
+  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_11_12_184800) do
+ActiveRecord::Schema[7.1].define(version: 2024_12_04_133715) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -202,7 +202,6 @@
     t.datetime "updated_at", null: false
     t.enum "category", default: "US_County", null: false, enum_type: "category"
     t.index ["name", "region"], name: "index_counties_on_name_and_region", unique: true
-    t.index ["name"], name: "index_counties_on_name"
     t.index ["region"], name: "index_counties_on_region"
   end
 
@@ -298,7 +297,6 @@
     t.bigint "user_id"
     t.string "group_id"
     t.index ["organization_id", "event_time"], name: "index_events_on_organization_id_and_event_time"
-    t.index ["organization_id"], name: "index_events_on_organization_id"
     t.index ["user_id"], name: "index_events_on_user_id"
   end
 
@@ -813,7 +811,6 @@
     t.bigint "role_id"
     t.index ["role_id"], name: "index_users_roles_on_role_id"
     t.index ["user_id", "role_id"], name: "index_users_roles_on_user_id_and_role_id"
-    t.index ["user_id"], name: "index_users_roles_on_user_id"
   end
 
   create_table "vendors", force: :cascade do |t|