for idx, lang := range langs {
		lang.Name = lang.Name + "_new"
		langs[idx] = lang
	}

	if err := DB.Clauses(clause.OnConflict{
		Columns:   []clause.Column{{Name: "code"}},
		DoUpdates: clause.AssignmentColumns([]string{"name"}),
	}).Create(&langs).Error; err != nil {
		t.Fatalf("failed to upsert, got %v", err)
	}

	for _, lang := range langs {
		var results []Language

								} else {
									columns = append(columns, column.Name)
								}
							}
						}
					}
				}

				onConflict.DoUpdates = append(onConflict.DoUpdates, clause.AssignmentColumns(columns)...)
				if len(onConflict.DoUpdates) == 0 {
					onConflict.DoNothing = true
				}

				// use primary fields as default OnConflict columns
				if len(onConflict.Columns) == 0 {