1 files changed, 31 insertions, 0 deletions
diff --git a/db/post_migrate/20210722042939_update_issuable_slas_where_issue_closed.rb b/db/post_migrate/20210722042939_update_issuable_slas_where_issue_closed.rb
new file mode 100644
index 00000000000..b611b51e3ff
--- /dev/null
+++ b/db/post_migrate/20210722042939_update_issuable_slas_where_issue_closed.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class UpdateIssuableSlasWhereIssueClosed < ActiveRecord::Migration[6.1]
+  ISSUE_CLOSED_STATUS = 2
+
+  class IssuableSla < ActiveRecord::Base
+    include EachBatch
+
+    self.table_name = 'issuable_slas'
+
+    belongs_to :issue, class_name: 'Issue'
+  end
+
+  class Issue < ActiveRecord::Base
+    self.table_name = 'issues'
+
+    has_one :issuable_sla, class_name: 'IssuableSla'
+  end
+
+  def up
+    IssuableSla.each_batch(of: 50) do |relation|
+      relation.joins(:issue)
+              .where(issues: { state_id: ISSUE_CLOSED_STATUS } )
+              .update_all(issuable_closed: true)
+    end
+  end
+
+  def down
+    # no-op
+  end
+end