## Patch Evaluation Group

`client.EvaluationGroups.Update(ctx, groupID, body) (*EvaluationGroup, error)`

**patch** `/v5/evaluation-groups/{group_id}`

Partially update an evaluation group's attributes.

Only the fields present in the request are changed; unset fields are left untouched.
Unlike the PUT endpoint, metadata is merged into the existing metadata key-by-key
rather than replaced wholesale, and group membership (evaluation_ids) cannot be
changed here -- use PUT to replace members. At least one field must be supplied or the
request fails with a 400. Supplying row_identifiers replaces the group's entire row
identifier set (an evaluation_id-to-column-name mapping for cross-dataset joins);
passing an empty mapping clears it.

### Parameters

- `groupID string`

- `body EvaluationGroupUpdateParams`

  - `Description param.Field[string]`

    Optional description

  - `Metadata param.Field[map[string, any]]`

    Optional metadata key-value pairs

  - `Name param.Field[string]`

    Name of the evaluation group

  - `RowIdentifiers param.Field[map[string, string]]`

    Optional mapping of evaluation_id to column name for cross-dataset joins

  - `Tags param.Field[[]string]`

    The tags associated with the entity

### Returns

- `type EvaluationGroup struct{…}`

  Response model for evaluation group

  - `ID string`

    Unique identifier of the evaluation group

  - `AccountID string`

    Account that owns this evaluation group

  - `CreatedAt Time`

    When the group was created

  - `Name string`

    Name of the evaluation group

  - `Tags []string`

    The tags associated with the entity

  - `DeletedAt Time`

    When the group was soft-deleted

  - `Description string`

    Optional description

  - `Members []EvaluationGroupMember`

    Evaluation members in this group. Returned by default on GET by id; on list endpoints, populated only with the 'members' view.

    - `ID string`

      Unique identifier of the member record

    - `CreatedAt Time`

      When this member was added to the group

    - `EvaluationGroupID string`

      ID of the evaluation group

    - `EvaluationID string`

      ID of the evaluation

    - `DeletedAt Time`

      When this membership was soft-deleted (if applicable)

    - `EvaluationCreatedAt Time`

      When the evaluation was created

    - `EvaluationName string`

      Name of the evaluation

    - `EvaluationTags []string`

      Tags of the evaluation

    - `Object EvaluationGroupMemberObject`

      - `const EvaluationGroupMemberObjectEvaluationGroupMember EvaluationGroupMemberObject = "evaluation_group.member"`

  - `Metadata map[string, any]`

    Optional metadata key-value pairs

  - `Object EvaluationGroupObject`

    - `const EvaluationGroupObjectEvaluationGroup EvaluationGroupObject = "evaluation_group"`

  - `RowIdentifiers []EvaluationGroupRowIdentifier`

    Row identifier mappings. Populated with 'row_identifiers' view.

    - `ColumnName string`

      Name of the column used as row identifier

    - `EvaluationID string`

      ID of the evaluation

    - `Object EvaluationGroupRowIdentifierObject`

      - `const EvaluationGroupRowIdentifierObjectEvaluationGroupRowIdentifier EvaluationGroupRowIdentifierObject = "evaluation_group.row_identifier"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/scaleapi/sgp-dev-go"
  "github.com/scaleapi/sgp-dev-go/option"
)

func main() {
  client := sgpdev.NewClient(
    option.WithAPIKey("My API Key"),
    option.WithAccountID("My Account ID"),
  )
  evaluationGroup, err := client.EvaluationGroups.Update(
    context.TODO(),
    "group_id",
    sgpdev.EvaluationGroupUpdateParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", evaluationGroup.ID)
}
```

#### Response

```json
{
  "id": "id",
  "account_id": "account_id",
  "created_at": "2019-12-27T18:11:19.117Z",
  "name": "name",
  "tags": [
    "string"
  ],
  "deleted_at": "2019-12-27T18:11:19.117Z",
  "description": "description",
  "members": [
    {
      "id": "id",
      "created_at": "2019-12-27T18:11:19.117Z",
      "evaluation_group_id": "evaluation_group_id",
      "evaluation_id": "evaluation_id",
      "deleted_at": "2019-12-27T18:11:19.117Z",
      "evaluation_created_at": "2019-12-27T18:11:19.117Z",
      "evaluation_name": "evaluation_name",
      "evaluation_tags": [
        "string"
      ],
      "object": "evaluation_group.member"
    }
  ],
  "metadata": {
    "foo": "bar"
  },
  "object": "evaluation_group",
  "row_identifiers": [
    {
      "column_name": "column_name",
      "evaluation_id": "evaluation_id",
      "object": "evaluation_group.row_identifier"
    }
  ]
}
```