Fix account_relationship_severance_events unique indexes (#29665)

app/models/account_relationship_severance_event.rb

@@ -8,6 +8,7 @@
 #  id                              :bigint(8)        not null, primary key
 #  account_id                      :bigint(8)        not null
 #  relationship_severance_event_id :bigint(8)        not null
+#  relationships_count             :integer          default(0), not null
 #  created_at                      :datetime         not null
 #  updated_at                      :datetime         not null
 #

db/migrate/20240320140159_create_account_relationship_severance_events.rb

@@ -3,11 +3,13 @@
 class CreateAccountRelationshipSeveranceEvents < ActiveRecord::Migration[7.1]
   def change
     create_table :account_relationship_severance_events do |t|
-      t.belongs_to :account, foreign_key: { on_delete: :cascade }, null: false, index: { unique: true }
-      t.belongs_to :relationship_severance_event, foreign_key: { on_delete: :cascade }, null: false, index: { unique: true }
+      t.belongs_to :account, foreign_key: { on_delete: :cascade }, null: false
+      t.belongs_to :relationship_severance_event, foreign_key: { on_delete: :cascade }, null: false
 
       t.integer :relationships_count, default: 0, null: false
 
+      t.index [:account_id, :relationship_severance_event_id], unique: true
+
       t.timestamps
     end
   end

db/schema.rb

@@ -96,8 +96,9 @@ ActiveRecord::Schema[7.1].define(version: 2024_03_20_140159) do
     t.integer "relationships_count", default: 0, null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["account_id"], name: "index_account_relationship_severance_events_on_account_id", unique: true
-    t.index ["relationship_severance_event_id"], name: "idx_on_relationship_severance_event_id_403f53e707", unique: true
+    t.index ["account_id", "relationship_severance_event_id"], name: "idx_on_account_id_relationship_severance_event_id_7bd82bf20e", unique: true
+    t.index ["account_id"], name: "index_account_relationship_severance_events_on_account_id"
+    t.index ["relationship_severance_event_id"], name: "idx_on_relationship_severance_event_id_403f53e707"
   end
 
   create_table "account_stats", force: :cascade do |t|