From cfcfc9c58072158ed11b1316821c022fef75b733 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Fri, 29 Mar 2019 15:59:44 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=81=E7=A7=BB=E6=96=87=E4=BB=B6?=
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---
 ...0329070441_migrate_homework_common_end_times.rb | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 db/migrate/20190329070441_migrate_homework_common_end_times.rb

diff --git a/db/migrate/20190329070441_migrate_homework_common_end_times.rb b/db/migrate/20190329070441_migrate_homework_common_end_times.rb
new file mode 100644
index 00000000..0fa7b6cb
--- /dev/null
+++ b/db/migrate/20190329070441_migrate_homework_common_end_times.rb
@@ -0,0 +1,14 @@
+class MigrateHomeworkCommonEndTimes < ActiveRecord::Migration
+  def up
+    homework_commons = HomeworkCommon.where("id < 21549")
+    homework_commons.find_each do |homework|
+      sql = "update homework_commons set end_time = (select max(end_time) from
+        homework_seconds where id = #{homework.id}) where id = #{homework.id}"
+
+      ActiveRecord::Base.connection.execute(sql)
+    end
+  end
+
+  def down
+  end
+end