Remove todos for deleted merge requests

2 files changed, 18 insertions, 1 deletions

diff --git a/db/migrate/20160331133914_remove_todos_for_deleted_merge_requests.rb b/db/migrate/20160331133914_remove_todos_for_deleted_merge_requests.rb
new file mode 100644
index 00000000000..54cea964ff2
--- /dev/null
+++ b/db/migrate/20160331133914_remove_todos_for_deleted_merge_requests.rb
@@ -0,0 +1,17 @@
+class RemoveTodosForDeletedMergeRequests < ActiveRecord::Migration
+  def up
+    execute <<-SQL
+      DELETE FROM todos
+      WHERE todos.target_type = 'MergeRequest'
+        AND NOT EXISTS (
+              SELECT *
+              FROM merge_requests
+              WHERE merge_requests.id = todos.target_id
+                AND merge_requests.deleted_at IS NULL
+            )
+    SQL
+  end
+
+  def down
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 9b9319ddb4f..90eaff1a4dd 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160324020319) do
+ActiveRecord::Schema.define(version: 20160331133914) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"