---
title: "Row Grouping - Displaying Grouped Data"
enterprise: true
framework: angular
version: "36.1.0"
---

# Row Grouping - Displaying Grouped Data

Grouping hierarchy can be displayed in the grid in different ways.

## Display Types

The row hierarchy can be shown in three different ways, configured by the `groupDisplayType` grid option:

- A [Single Group Column](https://www.ag-grid.com/angular-data-grid/grouping-single-group-column/) containing all row group levels.
- [Multiple Group Columns](https://www.ag-grid.com/angular-data-grid/grouping-multiple-group-columns/) with each column representing a row group level.
- [Group Rows](https://www.ag-grid.com/angular-data-grid/grouping-group-rows/) where parent rows are displayed as full width rows.

#### Grouping Display Types

```ts
import { Component } from "@angular/core";
import { HttpClient } from "@angular/common/http";
import { AgGridAngular } from "ag-grid-angular";
import "./styles.css";
import {
  AutoGroupColumnDef,
  ClientSideRowModelModule,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  GridReadyEvent,
  ModuleRegistry,
  RowGroupingDisplayType,
  enableDevValidations,
} from "ag-grid-community";
import { RowGroupingModule } from "ag-grid-enterprise";
if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

ModuleRegistry.registerModules([ClientSideRowModelModule, RowGroupingModule]);
import { IOlympicData } from "./interfaces";

@Component({
  selector: "my-app",
  standalone: true,
  imports: [AgGridAngular],
  template: `<div class="example-wrapper">
    <div class="example-header">
      <label>
        <span>groupDisplayType:</span>
        <select id="input-display-type" (change)="onDisplayTypeChange()">
          <option value="singleColumn">"singleColumn"</option>
          <option value="multipleColumns">"multipleColumns"</option>
          <option value="groupRows">"groupRows"</option>
        </select>
      </label>
    </div>
    <ag-grid-angular
      style="width: 100%; height: 100%;"
      [columnDefs]="columnDefs"
      [defaultColDef]="defaultColDef"
      [autoGroupColumnDef]="autoGroupColumnDef"
      [groupDefaultExpanded]="groupDefaultExpanded"
      [rowData]="rowData"
      (gridReady)="onGridReady($event)"
    />
  </div> `,
})
export class AppComponent {
  private gridApi!: GridApi<IOlympicData>;

  columnDefs: ColDef[] = [
    { field: "country", rowGroup: true, hide: true },
    { field: "year", rowGroup: true, hide: true },
    { field: "athlete" },
    { field: "sport" },
    { field: "gold" },
    { field: "silver" },
    { field: "bronze" },
  ];
  defaultColDef: ColDef = {
    flex: 1,
    minWidth: 100,
  };
  autoGroupColumnDef: AutoGroupColumnDef = {
    minWidth: 200,
  };
  groupDefaultExpanded = 1;
  rowData!: IOlympicData[];

  constructor(private http: HttpClient) {}

  onDisplayTypeChange() {
    const displayType = (
      document.querySelector("#input-display-type") as HTMLSelectElement
    ).value as RowGroupingDisplayType;
    this.gridApi.setGridOption("groupDisplayType", displayType);
  }

  onGridReady(params: GridReadyEvent<IOlympicData>) {
    this.gridApi = params.api;

    this.http
      .get<
        IOlympicData[]
      >("https://www.ag-grid.com/example-assets/olympic-winners.json")
      .subscribe((data) => (this.rowData = data));
  }
}
```

[Live example: Grouping Display Types](https://www.ag-grid.com/examples/grouping-display-types/group-display-types/angular)

To configure the display type, set the `groupDisplayType` property in the grid options to one of `"singleColumn"`, `"multipleColumns"` or `"groupRows"` as demonstrated in the following configuration:

```ts
<ag-grid-angular
    [groupDisplayType]="groupDisplayType"
    /* other grid options ... */ />

this.groupDisplayType = 'multipleColumns';
```

> **Note**
>
> While not advised, it is also possible to configure these columns using [Custom Group Columns](https://www.ag-grid.com/angular-data-grid/grouping-custom-group-columns/).