diff --git a/src/Appwrite/Database/Adapter.php b/src/Appwrite/Database/Adapter.php
index 9818a1f0b5..1bd817c124 100644
--- a/src/Appwrite/Database/Adapter.php
+++ b/src/Appwrite/Database/Adapter.php
@@ -68,7 +68,7 @@ abstract class Adapter
      *
      * @return array
      */
-    abstract public function createDocument(array $data, array $unique);
+    abstract public function createDocument(array $data = [], array $unique = []);
 
     /**
      * Update Document.
@@ -77,7 +77,7 @@ abstract class Adapter
      *
      * @return array
      */
-    abstract public function updateDocument(array $data);
+    abstract public function updateDocument(array $data = []);
 
     /**
      * Delete Node.
diff --git a/src/Appwrite/Database/Adapter/MySQL.php b/src/Appwrite/Database/Adapter/MySQL.php
index 78c5acbdea..378a4d6b81 100644
--- a/src/Appwrite/Database/Adapter/MySQL.php
+++ b/src/Appwrite/Database/Adapter/MySQL.php
@@ -718,8 +718,8 @@ class MySQL extends Adapter
             $roles = ['1=1'];
         }
 
-        $query = 'SELECT SUM(b_func.value) as result
-            FROM `'.$this->getNamespace().".database.documents` a {$where}{$join}{$func}
+        $query = "SELECT SUM(b_func.value) as result
+            FROM `".$this->getNamespace().".database.documents` a {$where}{$join}{$func}
             WHERE status = 0
                AND (".\implode('||', $roles).')';