opensearch-docs-cn/_query-dsl/aggregations/metric/maximum.md

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---
layout: default
title: Maximum
parent: Metric aggregations
grand_parent: Aggregations
nav_order: 60
---
# Maximum aggregations
The `max` metric is a single-value metric aggregations that returns the maximum value of a field.
The following example calculates the maximum of the `taxful_total_price` field:
```json
GET opensearch_dashboards_sample_data_ecommerce/_search
{
"size": 0,
"aggs": {
"max_taxful_total_price": {
"max": {
"field": "taxful_total_price"
}
}
}
}
```
{% include copy-curl.html %}
#### Example response
```json
{
"took": 17,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4675,
"relation": "eq"
},
"max_score": null,
"hits": []
},
"aggregations": {
"max_taxful_total_price": {
"value": 2250
}
}
}
```