> ## Documentation Index
> Fetch the complete documentation index at: https://algolia.com/llms.txt
> Use this file to discover all available pages before exploring further.

# queryType

> How prefix search is applied to query words

export const Setting = ({type, default: defaultValue, defaultNote, scope, min, max, formerly}) => {
  const renderedDefault = defaultValue === '' ? '""' : defaultValue;
  const renderedNote = defaultNote ? `(${defaultNote})` : '';
  return <ul>
      <li><strong>Type:</strong> <code>{type}</code></li>
      <li><strong>Default:</strong> <code>{renderedDefault}</code>{renderedNote}</li>
      {min && <li><strong>Min:</strong> <code>{min}</code></li>}
      {max && <li><strong>Max:</strong> <code>{max}</code></li>}
      <li><strong>Scope:</strong> <a href="/doc/api-reference/api-parameters"><code>{scope}</code></a></li>
      {formerly && <li>
          <strong>Deprecated name:</strong> <code>{formerly}</code>
        </li>}
    </ul>;
};

<Setting type="enum<string>" default="prefixLast" scope="settings,search" />

The `queryType` parameter controls if and how Algolia considers matches at the beginning of query words.
For more information, see [Prefix searching](/doc/guides/managing-results/optimize-search-results/override-search-engine-defaults/in-depth/prefix-searching).

## Options

<ParamField path="prefixLast">
  Only the **last** word in the query is treated as a prefix.\
  All preceding words must match in full.
</ParamField>

<ParamField path="prefixAll">
  **All** words in the query are treated as prefixes.

  <Note>
    With `prefixAll`, [`removeStopWords`](/doc/api-reference/api-parameters/removeStopWords) has no effect: stop words are never removed from words interpreted as prefixes, and `prefixAll` treats every word as a prefix.
  </Note>
</ParamField>

<ParamField path="prefixNone">
  Prefix search is turned off.
  All query words must match completely.
</ParamField>

## Example

<AccordionGroup>
  <Accordion title="Current API clients" defaultOpen="true">
    <CodeGroup>
      ```cs C# theme={"system"}
      var response = await client.SetSettingsAsync(
        "INDEX_NAME",
        new IndexSettings { QueryType = Enum.Parse<QueryType>("PrefixLast") }
      );
      ```

      ```dart Dart theme={"system"}
      final response = await client.setSettings(
        indexName: "INDEX_NAME",
        indexSettings: IndexSettings(
          queryType: QueryType.fromJson("prefixLast"),
        ),
      );
      ```

      ```go Go theme={"system"}
      response, err := client.SetSettings(client.NewApiSetSettingsRequest(
        "INDEX_NAME",
        search.NewEmptyIndexSettings().SetQueryType(search.QueryType("prefixLast"))))
      if err != nil {
        // handle the eventual error
        panic(err)
      }
      ```

      ```java Java theme={"system"}
      UpdatedAtResponse response = client.setSettings("INDEX_NAME", new IndexSettings().setQueryType(QueryType.PREFIX_LAST));
      ```

      ```js JavaScript theme={"system"}
      const response = await client.setSettings({ indexName: 'theIndexName', indexSettings: { queryType: 'prefixLast' } });
      ```

      ```kotlin Kotlin theme={"system"}
      var response =
        client.setSettings(
          indexName = "INDEX_NAME",
          indexSettings =
            IndexSettings(queryType = QueryType.entries.first { it.value == "prefixLast" }),
        )
      ```

      ```php PHP theme={"system"}
      $response = $client->setSettings(
          'INDEX_NAME',
          ['queryType' => 'prefixLast',
          ],
      );
      ```

      ```python Python theme={"system"}
      response = client.set_settings(
          index_name="INDEX_NAME",
          index_settings={
              "queryType": "prefixLast",
          },
      )
      ```

      ```ruby Ruby theme={"system"}
      response = client.set_settings("INDEX_NAME", Algolia::Search::IndexSettings.new(query_type: "prefixLast"))
      ```

      ```scala Scala theme={"system"}
      val response = Await.result(
        client.setSettings(
          indexName = "INDEX_NAME",
          indexSettings = IndexSettings(
            queryType = Some(QueryType.withName("prefixLast"))
          )
        ),
        Duration(100, "sec")
      )
      ```

      ```swift Swift theme={"system"}
      let response = try await client.setSettings(
          indexName: "INDEX_NAME",
          indexSettings: IndexSettings(queryType: SearchQueryType.prefixLast)
      )
      ```
    </CodeGroup>
  </Accordion>

  <Accordion title="Legacy API clients">
    <CodeGroup>
      ```cs C# theme={"system"}
      IndexSettings settings = new IndexSettings();
      settings.QueryType = "prefixLast";
      // settings.QueryType = "prefixAll";
      // settings.QueryType = "prefixNone";

      index.SetSettings(settings);
      ```

      ```go Go theme={"system"}
      res, err := index.SetSettings(search.Settings{
      	QueryType: opt.QueryType(
      		"prefixLast",
      		// "prefixAll",
      		// "prefixNone",
      	),
      })
      ```

      ```java Java theme={"system"}
      index.setSettings(
        new IndexSettings().setQueryType("prefixLast")
        // new IndexSettings().setQueryType("prefixAll")
        // new IndexSettings().setQueryType("prefixNone")
      );
      ```

      ```js JavaScript theme={"system"}
      index
        .setSettings({
          queryType: "prefixLast",
          // queryType: 'prefixAll'
          // queryType: 'prefixNone'
        })
        .then(() => {
          // done
        });
      ```

      ```kotlin Kotlin theme={"system"}
      val settings = settings {
          queryType = QueryType.PrefixLast
          // queryType = QueryType.PrefixAll
          // queryType = QueryType.PrefixNone
      }

      index.setSettings(settings)
      ```

      ```php PHP theme={"system"}
      $index->setSettings([
        'queryType' => 'prefixLast'
        // 'queryType' => 'prefixAll'
        // 'queryType' => 'prefixNone'
      ]);
      ```

      ```python Python theme={"system"}
      index.set_settings(
          {
              "queryType": "prefixLast"
              # 'queryType': 'prefixAll'
              # 'queryType': 'prefixNone'
          }
      )
      ```

      ```ruby Ruby theme={"system"}
      index.set_settings(
        {
          queryType: "prefixLast"
          # queryType: 'prefixAll'
          # queryType: 'prefixNone'
        }
      )
      ```

      ```scala Scala theme={"system"}
      client.execute {
        setSettings of "myIndex" `with` IndexSettings(
          queryType = Some(QueryType.prefixLast)
          // queryType = Some(QueryType.prefixAll)
          // queryType = Some(QueryType.prefixNone)
        )
      }
      ```

      ```swift Swift theme={"system"}
      let settings = Settings()
        .set(\.queryType, to: .prefixLast)
        //.set(\.queryType, to: .prefixAll)
        //.set(\.queryType, to: .prefixNone)

      index.setSettings(settings) { result in
        if case .success(let response) = result {
          print("Response: \(response)")
        }
      }
      ```
    </CodeGroup>
  </Accordion>
</AccordionGroup>