1 files changed, 24 insertions, 0 deletions
diff --git a/db/migrate/20190703001120_default_milestone_to_nil.rb b/db/migrate/20190703001120_default_milestone_to_nil.rb
new file mode 100644
index 00000000000..6a1c3603d9d
--- /dev/null
+++ b/db/migrate/20190703001120_default_milestone_to_nil.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class DefaultMilestoneToNil < ActiveRecord::Migration[5.1]
+  DOWNTIME = false
+
+  def up
+    execute(update_board_milestones_query)
+  end
+
+  def down
+    # no-op
+  end
+
+  private
+
+  # Only 105 records to update, as of 2019/07/18
+  def update_board_milestones_query
+    <<~HEREDOC
+   UPDATE boards
+     SET milestone_id = NULL
+   WHERE boards.milestone_id = -1
+    HEREDOC
+  end
+end