- Some small bugfixes done

src/Repository.php

@@ -22,16 +22,18 @@ class Repository
 
     public ? ConnectionAdapter $adapter;
 
-    protected Query\QueryBuilderInterface $queryBuilder;
-
-    protected EntityResolver $entityResolver;
-
     public string $alias;
 
     public string $entityClass;
 
     public array $events = [];
 
+    protected Query\QueryBuilderInterface $queryBuilder;
+
+    protected EntityResolver $entityResolver;
+
+    protected array $joined = [];
+
     public function __construct(string $entity, string $alias = self::DEFAULT_ALIAS, ConnectionAdapter $adapter = null) {
         $this->entityClass = $entity;
         $this->alias = $alias;
@@ -592,6 +594,13 @@ class Repository
 
         # @TODO Apply FILTER annotation to this too !
         foreach(array_filter((array) $fields) as $item) {
+            if ( isset($this->joined[$item]) ) {
+                continue;
+            }
+            else {
+                $this->joined[$item] = true;
+            }
+
             $annotation = $this->entityResolver->searchFieldAnnotation($item, [ Attribute\Property\Join::class, Join::class ]) ?:
                 $this->entityResolver->searchFieldAnnotation($item, [ Attribute\Property\Relation::class, Relation::class ]);