---
title: "Row Grouping - Displaying Grouped Data"
enterprise: true
framework: react
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/react-data-grid/grouping-single-group-column/) containing all row group levels.
- [Multiple Group Columns](https://www.ag-grid.com/react-data-grid/grouping-multiple-group-columns/) with each column representing a row group level.
- [Group Rows](https://www.ag-grid.com/react-data-grid/grouping-group-rows/) where parent rows are displayed as full width rows.

#### Grouping Display Types

```tsx
"use client";

import React, {
  useCallback,
  useMemo,
  useRef,
  useState,
  StrictMode,
} from "react";
import { createRoot } from "react-dom/client";
import { AgGridReact, AgGridProvider } from "ag-grid-react";
import "./styles.css";
import {
  AutoGroupColumnDef,
  ClientSideRowModelModule,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  ModuleRegistry,
  RowGroupingDisplayType,
  enableDevValidations,
} from "ag-grid-community";
import { RowGroupingModule } from "ag-grid-enterprise";
import { IOlympicData } from "./interfaces";
import { useFetchJson } from "./useFetchJson";

if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

const modules = [ClientSideRowModelModule, RowGroupingModule];

const GridExample = () => {
  const gridRef = useRef<AgGridReact<IOlympicData>>(null);
  const containerStyle = useMemo(() => ({ width: "100%", height: "100%" }), []);
  const gridStyle = useMemo(() => ({ height: "100%", width: "100%" }), []);

  const [columnDefs, setColumnDefs] = useState<ColDef[]>([
    { field: "country", rowGroup: true, hide: true },
    { field: "year", rowGroup: true, hide: true },
    { field: "athlete" },
    { field: "sport" },
    { field: "gold" },
    { field: "silver" },
    { field: "bronze" },
  ]);
  const defaultColDef = useMemo<ColDef>(() => {
    return {
      flex: 1,
      minWidth: 100,
    };
  }, []);
  const autoGroupColumnDef = useMemo<AutoGroupColumnDef>(() => {
    return {
      minWidth: 200,
    };
  }, []);

  const { data, loading } = useFetchJson<IOlympicData>(
    "https://www.ag-grid.com/example-assets/olympic-winners.json",
  );

  const onDisplayTypeChange = useCallback(() => {
    const displayType = (
      document.querySelector("#input-display-type") as HTMLSelectElement
    ).value as RowGroupingDisplayType;
    gridRef.current!.api.setGridOption("groupDisplayType", displayType);
  }, []);

  return (
    <AgGridProvider modules={modules}>
      <div style={containerStyle}>
        <div className="example-wrapper">
          <div className="example-header">
            <label>
              <span>groupDisplayType:</span>
              <select id="input-display-type" onChange={onDisplayTypeChange}>
                <option value="singleColumn">"singleColumn"</option>
                <option value="multipleColumns">"multipleColumns"</option>
                <option value="groupRows">"groupRows"</option>
              </select>
            </label>
          </div>

          <div style={gridStyle}>
            <AgGridReact<IOlympicData>
              ref={gridRef}
              rowData={data}
              loading={loading}
              columnDefs={columnDefs}
              defaultColDef={defaultColDef}
              autoGroupColumnDef={autoGroupColumnDef}
              groupDefaultExpanded={1}
            />
          </div>
        </div>
      </div>
    </AgGridProvider>
  );
};

const root = createRoot(document.getElementById("root")!);
root.render(
  <StrictMode>
    <GridExample />
  </StrictMode>,
);
```

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

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:

```jsx
const groupDisplayType = 'multipleColumns';

<AgGridReact groupDisplayType={groupDisplayType} />
```

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