1 files changed, 17 insertions, 0 deletions
diff --git a/db/post_migrate/20220119154442_remove_ci_pipelines_merge_requests_head_pipeline_id_fk.rb b/db/post_migrate/20220119154442_remove_ci_pipelines_merge_requests_head_pipeline_id_fk.rb
new file mode 100644
index 00000000000..6a978ce2ab1
--- /dev/null
+++ b/db/post_migrate/20220119154442_remove_ci_pipelines_merge_requests_head_pipeline_id_fk.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class RemoveCiPipelinesMergeRequestsHeadPipelineIdFk < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      execute('LOCK ci_pipelines, merge_requests IN ACCESS EXCLUSIVE MODE')
+
+      remove_foreign_key_if_exists(:merge_requests, :ci_pipelines, name: "fk_fd82eae0b9")
+    end
+  end
+
+  def down
+    add_concurrent_foreign_key(:merge_requests, :ci_pipelines, name: "fk_fd82eae0b9", column: :head_pipeline_id, target_column: :id, on_delete: :nullify)
+  end
+end