diff --git a/db/migrate/20191113061865_add_status_end_time_for_hack_user_lastest_code.rb b/db/migrate/20191113061865_add_status_end_time_for_hack_user_lastest_code.rb
deleted file mode 100644
index 1393c155b..000000000
--- a/db/migrate/20191113061865_add_status_end_time_for_hack_user_lastest_code.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-class AddStatusEndTimeForHackUserLastestCode < ActiveRecord::Migration[5.2]
-  def change
-    # add_column :hack_user_lastest_codes, :passed, :boolean, :default => false
-    # add_column :hack_user_lastest_codes, :pass_time, :timestamp
-    # add_column :hack_user_lastest_codes, :identifier, :string
-    # add_column :hack_user_lastest_codes, :language, :string
-    # add_column :hack_user_debugs, :hack_user_lastest_code_id, :integer
-    # add_column :hacks, :hack_user_lastest_codes_count, :integer, :default => 0
-    # add_column :hacks, :pass_num, :integer, :default => 0
-    # add_column :hacks, :submit_num, :integer, :default => 0
-    # add_column :hack_user_codes, :input, :text
-    # add_index :hack_user_lastest_codes, :user_id, name: "user_index"
-    # add_index :hack_user_lastest_codes, :hack_id, name: "hack_index"
-    # add_index :hack_user_lastest_codes, :identifier, unique: true
-    # add_index :hack_user_debugs, :hack_user_lastest_code_id, unique: true
-    # add_column :hack_user_lastest_codes, :submit_status, :integer, :default => 0
-    # add_column :hack_user_lastest_codes, :status, :integer
-    # add_column :hack_user_lastest_codes, :passed_time, :timestamp
-    # add_column :hack_user_debugs, :status, :integer
-
-    add_column :hack_user_codes, :execute_time, :integer
-    add_column :hack_user_codes, :execute_memory, :integer
-    add_column :hack_user_debugs, :execute_time, :integer
-    add_column :hack_user_debugs, :execute_memory, :integer
-
-  end
-end
diff --git a/db/migrate/20191113061866_add_status_end_time_for_hack_user_lastest_code.rb b/db/migrate/20191113061866_add_status_end_time_for_hack_user_lastest_code.rb
new file mode 100644
index 000000000..3cdc1be79
--- /dev/null
+++ b/db/migrate/20191113061866_add_status_end_time_for_hack_user_lastest_code.rb
@@ -0,0 +1,27 @@
+class AddStatusEndTimeForHackUserLastestCode < ActiveRecord::Migration[5.2]
+  def change
+    add_column :hack_user_lastest_codes, :passed, :boolean, :default => false
+    add_column :hack_user_lastest_codes, :pass_time, :timestamp
+    add_column :hack_user_lastest_codes, :identifier, :string
+    add_column :hack_user_lastest_codes, :language, :string
+    add_column :hack_user_debugs, :hack_user_lastest_code_id, :integer
+    add_column :hacks, :hack_user_lastest_codes_count, :integer, :default => 0
+    add_column :hacks, :pass_num, :integer, :default => 0
+    add_column :hacks, :submit_num, :integer, :default => 0
+    add_column :hack_user_codes, :input, :text
+    add_index :hack_user_lastest_codes, :user_id, name: "user_index"
+    add_index :hack_user_lastest_codes, :hack_id, name: "hack_index"
+    add_index :hack_user_lastest_codes, :identifier, unique: true
+    add_index :hack_user_debugs, :hack_user_lastest_code_id, unique: true
+    add_column :hack_user_lastest_codes, :submit_status, :integer, :default => 0
+    add_column :hack_user_lastest_codes, :status, :integer
+    add_column :hack_user_lastest_codes, :passed_time, :timestamp
+    add_column :hack_user_debugs, :status, :integer
+
+    # add_column :hack_user_codes, :execute_time, :integer
+    # add_column :hack_user_codes, :execute_memory, :integer
+    # add_column :hack_user_debugs, :execute_time, :integer
+    # add_column :hack_user_debugs, :execute_memory, :integer
+
+  end
+end