1 files changed, 28 insertions, 0 deletions
diff --git a/db/post_migrate/20221107222213_remove_old_member_namespace_id_fk.rb b/db/post_migrate/20221107222213_remove_old_member_namespace_id_fk.rb
new file mode 100644
index 00000000000..d46fa80336e
--- /dev/null
+++ b/db/post_migrate/20221107222213_remove_old_member_namespace_id_fk.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+class RemoveOldMemberNamespaceIdFk < Gitlab::Database::Migration[2.0]
+  disable_ddl_transaction!
+
+  TARGET_COLUMN = :member_namespace_id
+
+  def up
+    with_lock_retries do
+      remove_foreign_key_if_exists(:members, column: TARGET_COLUMN, name: fk_name(TARGET_COLUMN))
+    end
+  end
+
+  def down
+    add_concurrent_foreign_key(
+      :members,
+      :namespaces,
+      column: TARGET_COLUMN,
+      name: fk_name(TARGET_COLUMN),
+      on_delete: :nullify
+    )
+  end
+
+  def fk_name(column_name)
+    # generate a FK name
+    concurrent_foreign_key_name(:members, column_name)
+  end
+end