Apply suggestions from code review

Author: abnegate

src/Database/Adapter/MariaDB.php

@@ -1943,7 +1943,6 @@ public function count(string $collection, array $queries = [], ?int $max = null)
 			) table_count
         ";
 
-
         $sql = $this->trigger(Database::EVENT_DOCUMENT_COUNT, $sql);
 
         $stmt = $this->getPDO()->prepare($sql);

src/Database/Query.php

@@ -38,7 +38,7 @@ class Query
     public const TYPE_AND = 'and';
     public const TYPE_OR = 'or';
 
-    public const DEFAULT_ALIAS = 'A';
+    public const DEFAULT_ALIAS = 'main';
 
     public const TYPES = [
         self::TYPE_EQUAL,