1 files changed, 0 insertions, 38 deletions
diff --git a/db/migrate/20180201110056_add_foreign_keys_to_todos.rb b/db/migrate/20180201110056_add_foreign_keys_to_todos.rb
deleted file mode 100644
index 6b217632a52..00000000000
--- a/db/migrate/20180201110056_add_foreign_keys_to_todos.rb
+++ /dev/null
@@ -1,38 +0,0 @@
-class AddForeignKeysToTodos < ActiveRecord::Migration[4.2]
-  include Gitlab::Database::MigrationHelpers
-
-  class Todo < ActiveRecord::Base
-    self.table_name = 'todos'
-    include EachBatch
-  end
-
-  BATCH_SIZE = 1000
-
-  DOWNTIME = false
-
-  disable_ddl_transaction!
-
-  def up
-    Todo.where('NOT EXISTS ( SELECT true FROM users WHERE id=todos.user_id )').each_batch(of: BATCH_SIZE) do |batch|
-      batch.delete_all
-    end
-
-    Todo.where('NOT EXISTS ( SELECT true FROM users WHERE id=todos.author_id )').each_batch(of: BATCH_SIZE) do |batch|
-      batch.delete_all
-    end
-
-    Todo.where('note_id IS NOT NULL AND NOT EXISTS ( SELECT true FROM notes WHERE id=todos.note_id )').each_batch(of: BATCH_SIZE) do |batch|
-      batch.delete_all
-    end
-
-    add_concurrent_foreign_key :todos, :users, column: :user_id, on_delete: :cascade
-    add_concurrent_foreign_key :todos, :users, column: :author_id, on_delete: :cascade
-    add_concurrent_foreign_key :todos, :notes, column: :note_id, on_delete: :cascade
-  end
-
-  def down
-    remove_foreign_key :todos, column: :user_id
-    remove_foreign_key :todos, column: :author_id
-    remove_foreign_key :todos, :notes
-  end
-end