// This file is autogenerated, DO NOT EDIT
// Use `node scripts/generate-docs-examples.js` to generate the docs examples

[source, js]
----
const response = await client.transform.previewTransform({
  source: {
    index: "kibana_sample_data_ecommerce",
  },
  dest: {
    index: "sample_ecommerce_orders_by_customer",
  },
  pivot: {
    group_by: {
      user: {
        terms: {
          field: "user",
        },
      },
      customer_id: {
        terms: {
          field: "customer_id",
        },
      },
    },
    aggregations: {
      order_count: {
        value_count: {
          field: "order_id",
        },
      },
      total_order_amt: {
        sum: {
          field: "taxful_total_price",
        },
      },
      avg_amt_per_order: {
        avg: {
          field: "taxful_total_price",
        },
      },
      avg_unique_products_per_order: {
        avg: {
          field: "total_unique_products",
        },
      },
      total_unique_products: {
        cardinality: {
          field: "products.product_id",
        },
      },
    },
  },
});
console.log(response);
----