diff --git a/src/Query.php b/src/Query.php
index 8f7e602..24ce1ee 100644
--- a/src/Query.php
+++ b/src/Query.php
@@ -2,17 +2,47 @@
 
 namespace Tinderbox\Clickhouse;
 
+/**
+ * Query instance
+ */
 class Query
 {
-
+    /**
+     * SQL Query.
+     *
+     * @var string
+     */
     protected $query;
 
+    /**
+     * Files attached to query.
+     *
+     * @var array
+     */
     protected $files = [];
 
+    /**
+     * Server to process query.
+     *
+     * @var \Tinderbox\Clickhouse\Server
+     */
     protected $server;
 
+    /**
+     * Query settings
+     *
+     * @var array
+     */
     protected $settings = [];
 
+    /**
+     * Query constructor.
+     *
+     * @param \Tinderbox\Clickhouse\Server $server
+     * @param string                       $query
+     * @param array                        $files
+     * @param array                        $settings
+     */
     public function __construct(Server $server, string $query, array $files = [], array $settings = [])
     {
         $this->server = $server;
@@ -21,21 +51,41 @@ public function __construct(Server $server, string $query, array $files = [], ar
         $this->settings = $settings;
     }
 
+    /**
+     * Returns SQL query.
+     *
+     * @return string
+     */
     public function getQuery(): string
     {
         return $this->query;
     }
 
+    /**
+     * Returns files attached to query.
+     *
+     * @return array
+     */
     public function getFiles(): array
     {
         return $this->files;
     }
 
+    /**
+     * Returns server to process query.
+     *
+     * @return \Tinderbox\Clickhouse\Server
+     */
     public function getServer(): Server
     {
         return $this->server;
     }
 
+    /**
+     * Returns settings.
+     *
+     * @return array
+     */
     public function getSettings(): array
     {
         return $this->settings;
diff --git a/src/Transport/HttpTransport.php b/src/Transport/HttpTransport.php
index b634985..d30155a 100644
--- a/src/Transport/HttpTransport.php
+++ b/src/Transport/HttpTransport.php
@@ -106,7 +106,7 @@ public function write(array $queries, int $concurrency = 5) : array
 
                         $uri = $this->buildRequestUri($query->getServer(), [
                             'query' => $query->getQuery()
-                        ]);
+                        ], $query->getSettings());
 
                         $stream = $file->open();
                         $openedStreams[] = $stream;
@@ -118,7 +118,7 @@ public function write(array $queries, int $concurrency = 5) : array
                 } else {
                     $headers = $this->getHeaders();
 
-                    $uri = $this->buildRequestUri($query->getServer());
+                    $uri = $this->buildRequestUri($query->getServer(), [], $query->getSettings());
 
                     $request = new Request('POST', $uri, $headers, gzencode($query->getQuery()));
 
@@ -203,7 +203,7 @@ public function read(array $queries, int $concurrency = 5) : array
 
                 $body = new MultipartStream($multipart);
 
-                $uri = $this->buildRequestUri($query->getServer(), $params);
+                $uri = $this->buildRequestUri($query->getServer(), $params, $query->getSettings());
 
                 yield $index => new Request('POST', $uri, [], $body);
             }
@@ -349,11 +349,12 @@ protected function assembleResult(Query $query, ResponseInterface $response): Re
      * Builds uri with necessary params.
      *
      * @param \Tinderbox\Clickhouse\Server $server
-     * @param array $query
+     * @param array                        $query
+     * @param array                        $settings
      *
      * @return string
      */
-    protected function buildRequestUri(Server $server, array $query = []): string
+    protected function buildRequestUri(Server $server, array $query = [], array $settings = []): string
     {
         $uri = $server->getOptions()->getProtocol() . '://' . $server->getHost() . ':' . $server->getPort();
 
@@ -369,6 +370,8 @@ protected function buildRequestUri(Server $server, array $query = []): string
             $query['password'] = $server->getPassword();
         }
 
+        $query = array_merge($query, $settings);
+
         return $uri . '?' . http_build_query($query);
     }
 }