当我尝试在Heroku上为我的Rails应用程序运行数据库迁移时，出现标准错误。我可以在我的开发环境中运行数据库迁移，但是当我尝试通过Heroku为我们的生产服务器运行它时会出现此错误。
Running rake db:migrate on roomedy... up, run.8811
ActiveRecord::SchemaMigration Load (1.3ms) SELECT "schema_migrations".* FROM "schema_migrations"
Migrating to CreateRelationships (20151014160311)
(1.1ms) BEGIN
== 20151014160311 CreateRelationships: migrating ==============================
-- create_table(:relationships)
(15.9ms) CREATE TABLE "relationships" ("id" serial primary key, "house_id" integer, "user_id" integer, "created_at" timestamp NOT NULL, "updated_at" timestamp NOT NULL)
(3.4ms) CREATE INDEX "index_relationships_on_house_id" ON "relationships" ("house_id")
(3.1ms) CREATE INDEX "index_relationships_on_user_id" ON "relationships" ("user_id")
-> 0.0310s
-- add_foreign_key(:joined_tables, :houses)
(10.7ms) ALTER TABLE "joined_tables" ADD CONSTRAINT "fk_rails_fbc117e2f7"
FOREIGN KEY ("house_id")
REFERENCES "houses" ("id")
PG::UndefinedTable: ERROR: relation "joined_tables" does not exist
: ALTER TABLE "joined_tables" ADD CONSTRAINT "fk_rails_fbc117e2f7"
FOREIGN KEY ("house_id")
REFERENCES "houses" ("id")
(1.2ms) ROLLBACK
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:
PG::UndefinedTable: ERROR: relation "joined_tables" does not exist
: ALTER TABLE "joined_tables" ADD CONSTRAINT "fk_rails_fbc117e2f7"
FOREIGN KEY ("house_id")
REFERENCES "houses" ("id")
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `async_exec'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `block in execute'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract_adapter.rb:466:in `block in log'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.0/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract_adapter.rb:460:in `log'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:154:in `execute'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/schema_statements.rb:724:in `add_foreign_key'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:662:in `block in method_missing'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:632:in `block in say_with_time'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:632:in `say_with_time'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:652:in `method_missing'
/app/db/migrate/20151014160311_create_relationships.rb:9:in `change'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:606:in `exec_migration'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:590:in `block (2 levels) in migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:589:in `block in migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:292:in `with_connection'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:588:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:765:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:995:in `block in execute_migration_in_transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:1041:in `block in ddl_transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/transaction.rb:188:in `within_new_transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/transactions.rb:220:in `transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:1041:in `ddl_transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:994:in `execute_migration_in_transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:956:in `block in migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:952:in `each'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:952:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:820:in `up'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/migration.rb:798:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/tasks/database_tasks.rb:137:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:44:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)