diff --git a/src/Endpoints/HttpFactoryTrait.php b/src/Endpoints/HttpFactoryTrait.php
index fe5edbb..5ca08b9 100644
--- a/src/Endpoints/HttpFactoryTrait.php
+++ b/src/Endpoints/HttpFactoryTrait.php
@@ -52,6 +52,7 @@ protected function createRequest(string $method, string $uri, array $body = []):
 
     protected function queryBuild(array $params): string
     {
-        return '?' . http_build_query($params);
+        $paramStr = http_build_query($params);
+        return $paramStr ? '?' . $paramStr : '';
     }
 }
\ No newline at end of file
diff --git a/src/Models/Request/CreateIndex.php b/src/Models/Request/CreateIndex.php
index 54ef0a5..1aa1432 100644
--- a/src/Models/Request/CreateIndex.php
+++ b/src/Models/Request/CreateIndex.php
@@ -8,16 +8,27 @@
 
 class CreateIndex implements RequestModel
 {
-    public function __construct(protected string $fieldName, protected string $fieldSchema, protected array $schemaParams = [])
+    protected string $fieldName;
+    protected ?array $fieldSchema;
+
+    public function __construct(string $fieldName, array|string $fieldSchema = null)
     {
+        if (is_string($fieldSchema)) {
+            $this->fieldSchema = [
+                'type' => $fieldSchema
+            ];
+        } else {
+            $this->fieldSchema = $fieldSchema;
+        }
+
+        $this->fieldName = $fieldName;
     }
 
     public function toArray(): array
     {
-        // TODO: schema params is missing
-        return [
+        return array_filter([
             'field_name' => $this->fieldName,
             'field_schema' => $this->fieldSchema
-        ];
+        ]);
     }
 }
\ No newline at end of file
diff --git a/src/Models/Request/ScrollRequest.php b/src/Models/Request/ScrollRequest.php
index 93aabde..e55dd5d 100644
--- a/src/Models/Request/ScrollRequest.php
+++ b/src/Models/Request/ScrollRequest.php
@@ -20,6 +20,8 @@ class ScrollRequest implements RequestModel
 
     protected bool|array|null $withPayload = null;
 
+    protected string|array|null $orderBy = null;
+
     public function setFilter(Filter $filter): static
     {
         $this->filter = $filter;
@@ -41,6 +43,13 @@ public function setOffset(int|string $offset): static
         return $this;
     }
 
+    public function setOrderBy(array|string $orderBy): static
+    {
+        $this->orderBy = $orderBy;
+
+        return $this;
+    }
+
     public function setWithPayload($withPayload): static
     {
         $this->withPayload = $withPayload;
@@ -74,6 +83,9 @@ public function toArray(): array
         if ($this->withPayload) {
             $body['with_payload'] = $this->withPayload;
         }
+        if ($this->orderBy) {
+            $body['order_by'] = $this->orderBy;
+        }
 
         return $body;
     }
diff --git a/tests/Integration/Endpoints/Collections/SearchSortTest.php b/tests/Integration/Endpoints/Collections/SearchSortTest.php
new file mode 100644
index 0000000..33423b1
--- /dev/null
+++ b/tests/Integration/Endpoints/Collections/SearchSortTest.php
@@ -0,0 +1,130 @@
+<?php
+/**
+ * @since     Mar 2023
+ * @author    Haydar KULEKCI <haydarkulekci@gmail.com>
+ */
+
+namespace Integration\Endpoints\Collections;
+
+use Qdrant\Endpoints\Collections;
+use Qdrant\Exception\InvalidArgumentException;
+use Qdrant\Models\Filter\Condition\MatchString;
+use Qdrant\Models\Filter\Filter;
+use Qdrant\Models\PointsStruct;
+use Qdrant\Models\Request\CreateIndex;
+use Qdrant\Models\Request\ScrollRequest;
+use Qdrant\Models\Request\SearchRequest;
+use Qdrant\Models\VectorStruct;
+use Qdrant\Tests\Integration\AbstractIntegration;
+
+class SearchSortTest extends AbstractIntegration
+{
+    /**
+     * @throws InvalidArgumentException
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        $this->createCollections('sample-collection');
+
+        $response = $this->getCollections('sample-collection')->index()->create(
+            (new CreateIndex('sort', [
+                'type' => 'integer',
+                'range' => true,
+                'lookup' => false,
+                'is_principal' => true
+            ])),
+            [
+                'wait' => 'true'
+            ]
+        );
+
+        $this->assertEquals('ok', $response['status']);
+        $this->assertEquals('completed', $response['result']['status']);
+
+        $response = $this->getCollections('sample-collection')->points()
+            ->upsert(
+                PointsStruct::createFromArray(self::basicPointDataProvider()[0][0]),
+                [
+                    'wait' => 'true'
+                ]
+            );
+
+        $this->assertEquals('ok', $response['status']);
+        $this->assertEquals('completed', $response['result']['status']);
+    }
+
+    public static function basicPointDataProvider(): array
+    {
+        return [
+            [
+                [
+                    [
+                        'id' => 1,
+                        'vector' => new VectorStruct([1, 3, 400], 'image'),
+                        'payload' => [
+                            'sort' => 1,
+                            'color' => 'red'
+                        ]
+                    ],
+                    [
+                        'id' => 2,
+                        'vector' => new VectorStruct([1, 3, 300], 'image'),
+                        'payload' => [
+                            'sort' => 2,
+                            'color' => 'red'
+                        ]
+                    ],
+                    [
+                        'id' => 3,
+                        'vector' => new VectorStruct([1, 3, 300], 'image'),
+                        'payload' => [
+                            'sort' => 3,
+                            'color' => 'green'
+                        ]
+                    ],
+                ]
+            ]
+        ];
+    }
+
+    public function testScrollAscPoint(): void
+    {
+        $filter = (new Filter())->addMust(
+            new MatchString('color', 'red')
+        );
+
+        $scroll = (new ScrollRequest())->setFilter($filter)->setOrderBy('sort');
+        $response = $this->getCollections('sample-collection')->points()->scroll($scroll);
+
+        $this->assertEquals('ok', $response['status']);
+        $this->assertCount(2, $response['result']);
+        $this->assertEquals(1, $response['result']['points'][0]['id']);
+    }
+
+    public function testScrollDescPoint(): void
+    {
+        $filter = (new Filter())->addMust(
+            new MatchString('color', 'red')
+        );
+
+        $scroll = (new ScrollRequest())->setFilter($filter)->setOrderBy([
+            'key' => 'sort',
+            'direction' => 'desc'
+        ]);
+        $response = $this->getCollections('sample-collection')->points()->scroll($scroll);
+
+        $this->assertEquals('ok', $response['status']);
+        $this->assertCount(2, $response['result']);
+        $this->assertEquals(2, $response['result']['points'][0]['id']);
+    }
+
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+        $collections = new Collections($this->client);
+
+        $collections->setCollectionName('sample-collection')->delete();
+    }
+}
\ No newline at end of file