# Set a dataset table's file-statistics setting

**PUT** `/v1/datasets/{id}/tables/{tableKey}/column-metrics`

**Operation ID**: `putTableColumnMetrics`
**Summary**: Set a dataset table's file-statistics setting
Turns Grepr's default column statistics mode on or off for the table. On sets the table's write.metadata.metrics.default to truncate(16), replacing any other default; off removes it when it holds that value, and leaves a value set outside Grepr alone. Per-column modes are never changed. On costs about 18 bytes of table metadata per indexed column for each data file. Pipelines writing the dataset apply a change to new files by their next restart, and possibly sooner; files already written keep their statistics. Supported for logs_raw and spans_raw.

## Tags
- Datasets
## Parameters

- **id** (required) - path
  - Type: string
- **tableKey** (required) - path
  - Type: string

## Request Body

**Content-Type**: `application/json`

**Schema**: `TableColumnMetricsUpdate`

## Responses

### 200

The table's setting after the change.

- **Content-Type**: `application/json` / `TableColumnMetrics`
### 404

Dataset not found, or the table has no such setting.

### 409

The table kept changing under the request, which running writers can cause; retry.

### 422

The body is missing, or has no enabled field.