diff --git a/src/Adapter/DefaultAdapterTrait.php b/src/Adapter/DefaultAdapterTrait.php
index 99aa9d0..2de4f7b 100644
--- a/src/Adapter/DefaultAdapterTrait.php
+++ b/src/Adapter/DefaultAdapterTrait.php
@@ -2,7 +2,7 @@
 
 namespace Ulmus\Adapter;
 
-use Ulmus\{ConnectionAdapter, Entity\InformationSchema\Table, Migration\FieldDefinition, Repository, QueryBuilder\MysqlQueryBuilder};
+use Ulmus\{ConnectionAdapter, Entity\InformationSchema\Table, Migration\FieldDefinition, Repository, QueryBuilder\Sql\MysqlQueryBuilder};
 
 trait DefaultAdapterTrait
 {
diff --git a/src/Common/PdoObject.php b/src/Common/PdoObject.php
index 3a2cf66..e1d1f59 100644
--- a/src/Common/PdoObject.php
+++ b/src/Common/PdoObject.php
@@ -25,13 +25,13 @@ class PdoObject extends PDO {
             if (false !== ( $statement = $this->prepare($sql) )) {
                 $statement->setFetchMode(\PDO::FETCH_ASSOC);
                 $this->execute($statement, $parameters, false);
-
-                return $statement;
             }
-        } 
+        }
         catch (\Throwable $e) {
             throw new \PdoException($e->getMessage() . " `$sql` with data:" . json_encode($parameters));
         }
+
+        return $statement;
     }
 
     public function __destruct()
diff --git a/src/Entity/EntityInterface.php b/src/Entity/EntityInterface.php
index c935ba4..8d57c29 100644
--- a/src/Entity/EntityInterface.php
+++ b/src/Entity/EntityInterface.php
@@ -3,7 +3,7 @@
 namespace Ulmus\Entity;
 
 use Ulmus\Common\{ EntityField, EntityResolver };
-use Ulmus\{ ConnectionAdapter, EntityCollection, Query\QueryBuilderInterface, Repository };
+use Ulmus\{ ConnectionAdapter, EntityCollection, QueryBuilder\QueryBuilderInterface, Repository };
 
 interface EntityInterface /* extends \JsonSerializable */
 {
diff --git a/src/EntityTrait.php b/src/EntityTrait.php
index 6cd0772..7ac223d 100644
--- a/src/EntityTrait.php
+++ b/src/EntityTrait.php
@@ -4,7 +4,7 @@ namespace Ulmus;
 
 use Notes\Attribute\Ignore;
 use Psr\Http\Message\ServerRequestInterface;
-use Ulmus\{Common\EntityResolver, Common\EntityField, Entity\EntityInterface, Query\QueryBuilderInterface};
+use Ulmus\{Common\EntityResolver, Common\EntityField, Entity\EntityInterface, QueryBuilder\QueryBuilderInterface};
 use Ulmus\SearchRequest\{Attribute\SearchParameter,
     SearchMethodEnum,
     SearchRequestInterface,
@@ -348,7 +348,7 @@ trait EntityTrait {
             #  public ? string $username = null;
 
             #  #[SearchParameter(method: SearchMethodEnum::Where, toggle: true)]
-            #  public ? string $hidden = null;
+            #  public ? bool $hidden = null;
 
             #  #[SearchParameter(method: SearchMethodEnum::Like)]
             #  public ? string $word = null;
diff --git a/src/Query/Fragment.php b/src/Query/Fragment.php
index 0c55b2e..6ed2c36 100644
--- a/src/Query/Fragment.php
+++ b/src/Query/Fragment.php
@@ -2,11 +2,11 @@
 
 namespace Ulmus\Query;
 
-abstract class Fragment {
+abstract class Fragment implements QueryFragmentInterface{
 
     public int $order = 0;
 
-    public abstract function render() /*: mixed*/;
+    public abstract function render() : mixed;
 
     public function order() : float
     {
diff --git a/src/Query/GroupBy.php b/src/Query/GroupBy.php
index f1d31f9..0b20dd8 100644
--- a/src/Query/GroupBy.php
+++ b/src/Query/GroupBy.php
@@ -9,10 +9,10 @@ class GroupBy extends Fragment {
     
     const SQL_TOKEN = "GROUP BY";
 
-    public function set(array $order) : self
+    public function set(array $fields) : self
     {
-        $this->groupBy = [ $order ];
-        
+        $this->groupBy = $fields;
+
         return $this;
     }
 
diff --git a/src/Query/Having.php b/src/Query/Having.php
index d584501..6b03fc0 100644
--- a/src/Query/Having.php
+++ b/src/Query/Having.php
@@ -2,8 +2,6 @@
 
 namespace Ulmus\Query;
 
-use Ulmus\MysqlQueryBuilder;
-
 use Ulmus\Common\EntityField,
     Ulmus\Common\Sql;
 
diff --git a/src/Query/Join.php b/src/Query/Join.php
index 18b7c7b..bf48920 100644
--- a/src/Query/Join.php
+++ b/src/Query/Join.php
@@ -2,7 +2,6 @@
 
 namespace Ulmus\Query;
 
-use Ulmus\MysqlQueryBuilder;
 use Ulmus\Repository\ConditionTrait;
 
 class Join extends Fragment
diff --git a/src/Query/QueryBuilderInterface.php b/src/Query/QueryBuilderInterface.php
deleted file mode 100644
index 6ac6e7e..0000000
--- a/src/Query/QueryBuilderInterface.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-namespace Ulmus\Query;
-
-use Ulmus\Query;
-
-interface QueryBuilderInterface
-{
-    public function push(Fragment $queryFragment) : self;
-    public function pull(Fragment $queryFragment) : self;
-    public function render(bool $skipToken = false) /* mixed */;
-    public function reset() : void;
-    public function getFragment(string $class, int $index = 0) : ? Fragment;
-    public function removeFragment(Query\Fragment|array|\Stringable|string $fragment) : void;
-}
\ No newline at end of file
diff --git a/src/Query/QueryFragmentInterface.php b/src/Query/QueryFragmentInterface.php
new file mode 100644
index 0000000..b4c6794
--- /dev/null
+++ b/src/Query/QueryFragmentInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace Ulmus\Query;
+
+interface QueryFragmentInterface
+{
+    public function render() : mixed;
+}
\ No newline at end of file
diff --git a/src/Query/Set.php b/src/Query/Set.php
index 69d2379..11ad8aa 100644
--- a/src/Query/Set.php
+++ b/src/Query/Set.php
@@ -2,8 +2,6 @@
 
 namespace Ulmus\Query;
 
-use Ulmus\MysqlQueryBuilder;
-
 class Set extends Fragment {
 
     public int $order = 0;
diff --git a/src/Query/Values.php b/src/Query/Values.php
index 215b28a..7053c43 100644
--- a/src/Query/Values.php
+++ b/src/Query/Values.php
@@ -2,8 +2,6 @@
 
 namespace Ulmus\Query;
 
-use Ulmus\MysqlQueryBuilder;
-
 class Values extends Fragment {
 
     public int $order = 0;
@@ -12,9 +10,9 @@ class Values extends Fragment {
     
     public array $rows;
     
-    public MysqlQueryBuilder $queryBuilder;
+    public QueryBuilderInterface $queryBuilder;
 
-    public function __construct(MysqlQueryBuilder $queryBuilder)
+    public function __construct(QueryBuilderInterface $queryBuilder)
     {
         $this->queryBuilder = $queryBuilder;
     }
diff --git a/src/QueryBuilder.php b/src/QueryBuilder.php
index 4d37678..a20af9e 100644
--- a/src/QueryBuilder.php
+++ b/src/QueryBuilder.php
@@ -2,7 +2,7 @@
 
 namespace Ulmus;
 
-class QueryBuilder extends QueryBuilder\MysqlQueryBuilder
+class QueryBuilder extends QueryBuilder\Sql\MysqlQueryBuilder
 {
     # Backward compatibility defaulting on MySQL/MariaDB query builder
 }
\ No newline at end of file
diff --git a/src/QueryBuilder/QueryBuilderInterface.php b/src/QueryBuilder/QueryBuilderInterface.php
new file mode 100644
index 0000000..cbaa69f
--- /dev/null
+++ b/src/QueryBuilder/QueryBuilderInterface.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Ulmus\QueryBuilder;
+
+use Ulmus\Query\QueryFragmentInterface;
+
+interface QueryBuilderInterface
+{
+    public function push(QueryFragmentInterface $queryFragment) : self;
+    public function pull(QueryFragmentInterface $queryFragment) : self;
+    public function render(bool $skipToken = false) /* mixed */;
+    public function reset() : void;
+    public function getFragment(string $class, int $index = 0) : ? QueryFragmentInterface;
+    public function removeFragment(QueryFragmentInterface|array|\Stringable|string $fragment) : void;
+}
\ No newline at end of file
diff --git a/src/QueryBuilder/Sql/MssqlQueryBuilder.php b/src/QueryBuilder/Sql/MssqlQueryBuilder.php
index 7f08fa2..45e6665 100644
--- a/src/QueryBuilder/Sql/MssqlQueryBuilder.php
+++ b/src/QueryBuilder/Sql/MssqlQueryBuilder.php
@@ -3,10 +3,9 @@
 namespace Ulmus\QueryBuilder\Sql;
 
 use Ulmus\{ Query };
-use Ulmus\QueryBuilder\SqlQueryBuilder;
 
 # Soon to extends SqlQueryBuilder
-class MssqlQueryBuilder extends MysqlQueryBuilder implements Query\QueryBuilderInterface
+class MssqlQueryBuilder extends MysqlQueryBuilder
 {
     public function limit(int $value) : self
     {
diff --git a/src/QueryBuilder/Sql/MysqlQueryBuilder.php b/src/QueryBuilder/Sql/MysqlQueryBuilder.php
index e7bd0de..28b5de0 100644
--- a/src/QueryBuilder/Sql/MysqlQueryBuilder.php
+++ b/src/QueryBuilder/Sql/MysqlQueryBuilder.php
@@ -2,8 +2,7 @@
 
 namespace Ulmus\QueryBuilder\Sql;
 
-use Ulmus\{Query, Adapter, QueryBuilder\SqlQueryBuilder};
-use Ulmus\Query\QueryBuilderInterface;
+use Ulmus\{Query, Adapter, QueryBuilder\SqlQueryBuilder, QueryBuilder\QueryBuilderInterface, Query\QueryFragmentInterface, };
 
 class MysqlQueryBuilder extends SqlQueryBuilder
 {
@@ -184,7 +183,6 @@ class MysqlQueryBuilder extends SqlQueryBuilder
     public function close() : self
     {
         if ( null !== ($this->where ?? null) && $this->where->parent ) {
-
             # if an enclosure was opened, and nothing done, we must remove the unused node
             if ( empty($this->where->conditionList) && (count($this->where->parent->conditionList) === 1) ) {
                 unset($this->where->parent->conditionList);
@@ -198,22 +196,14 @@ class MysqlQueryBuilder extends SqlQueryBuilder
 
     public function where(string|\Stringable $field, mixed $value, string $operator = Query\Where::OPERATOR_EQUAL, string $condition = Query\Where::CONDITION_AND, bool $not = false) : self
     {
-        # Empty IN case
-        # if ( [] === $value ) {
-        #     return $this;
-        # }
-
-        if ( $this->where ?? false ) {
-            $where = $this->where;
-        }
-        elseif ( null === ( $where = $this->getFragment(Query\Where::class) ) ) {
-            $this->where = $where = new Query\Where($this);
-            $this->push($where);
+        if ( empty($this->where) && ! $this->getFragment(Query\Where::class) ) {
+            $this->where = new Query\Where($this);
+            $this->push($this->where);
         }
 
         $this->whereConditionOperator = $operator;
 
-        $where->add($field, $value, $operator, $condition, $not);
+        $this->where->add($field, $value, $operator, $condition, $not);
 
         return $this;
     }
@@ -225,16 +215,13 @@ class MysqlQueryBuilder extends SqlQueryBuilder
 
     public function having(string|\Stringable $field, mixed $value, string $operator = Query\Where::OPERATOR_EQUAL, string $condition = Query\Where::CONDITION_AND, bool $not = false) : self
     {
-        if ( $this->having ?? false ) {
-            $having = $this->having;
-        }
-        elseif ( null === ( $having = $this->getFragment(Query\Having::class) ) ) {
-            $this->having = $having = new Query\Having($this);
-            $this->push($having);
+        if ( empty($this->having) && ! $this->getFragment(Query\Having::class) ) {
+            $this->having = new Query\Having($this);
+            $this->push($this->having);
         }
 
         $this->havingConditionOperator = $operator;
-        $having->add($field, $value, $operator, $condition, $not);
+        $this->having->add($field, $value, $operator, $condition, $not);
 
         return $this;
     }
@@ -262,7 +249,7 @@ class MysqlQueryBuilder extends SqlQueryBuilder
             $this->push($offset);
 
             # A limit is required to match an offset
-            if ( null === $limit = $this->getFragment(Query\Limit::class) ) {
+            if ( null === $this->getFragment(Query\Limit::class) ) {
                 $this->limit(\PHP_INT_MAX);
             }
         }
@@ -284,14 +271,14 @@ class MysqlQueryBuilder extends SqlQueryBuilder
         return $this;
     }
 
-    public function groupBy(string|object $field, ? string $direction = null) : self
+    public function groupBy(string|object $field) : self
     {
         if ( null === $groupBy = $this->getFragment(Query\GroupBy::class) ) {
             $groupBy = new Query\GroupBy();
             $this->push($groupBy);
         }
 
-        $groupBy->add($field, $direction);
+        $groupBy->add($field);
 
         return $this;
     }
@@ -432,14 +419,14 @@ class MysqlQueryBuilder extends SqlQueryBuilder
         return $this;
     }
 
-    public function push(Query\Fragment $queryFragment) : self
+    public function push(QueryFragmentInterface $queryFragment) : self
     {
         $this->queryStack[] = $queryFragment;
 
         return $this;
     }
 
-    public function pull(Query\Fragment $queryFragment) : self
+    public function pull(QueryFragmentInterface  $queryFragment) : self
     {
         return array_shift($this->queryStack);
     }
@@ -469,7 +456,7 @@ class MysqlQueryBuilder extends SqlQueryBuilder
         unset($this->where, $this->having);
     }
 
-    public function getFragment(string $class, int $index = 0) : ? Query\Fragment
+    public function getFragment(string $class, int $index = 0) : ? QueryFragmentInterface
     {
         foreach($this->queryStack as $item) {
             if ( is_a($item, $class, true) ) {
@@ -482,7 +469,7 @@ class MysqlQueryBuilder extends SqlQueryBuilder
         return null;
     }
 
-    public function removeFragment(Query\Fragment|array|\Stringable|string $fragment) : void
+    public function removeFragment(QueryFragmentInterface|array|\Stringable|string $fragment) : void
     {
         is_object($fragment) && $fragment = get_class($fragment);
 
@@ -500,7 +487,7 @@ class MysqlQueryBuilder extends SqlQueryBuilder
         }
     }
 
-    public function getFragments(Query\Fragment|array|\Stringable|string $fragment = null) : array
+    public function getFragments(QueryFragmentInterface|array|\Stringable|string $fragment = null) : array
     {
         return $fragment !== null ? array_filter($this->queryStack, fn($e) => is_a($e, $fragment, true) ) : $this->queryStack;
     }
diff --git a/src/QueryBuilder/Sql/SqliteQueryBuilder.php b/src/QueryBuilder/Sql/SqliteQueryBuilder.php
index f989b0c..fe7cf5c 100644
--- a/src/QueryBuilder/Sql/SqliteQueryBuilder.php
+++ b/src/QueryBuilder/Sql/SqliteQueryBuilder.php
@@ -3,10 +3,9 @@
 namespace Ulmus\QueryBuilder\Sql;
 
 use Ulmus\Query;
-use Ulmus\QueryBuilder\SqlQueryBuilder;
 
 # Soon to extends SqlQueryBuilder
-class SqliteQueryBuilder extends MysqlQueryBuilder implements Query\QueryBuilderInterface
+class SqliteQueryBuilder extends MysqlQueryBuilder
 {
     public function pragma(/*object|Stringable*/ $name, $value = null, bool $callable = false) : self
     {
diff --git a/src/QueryBuilder/SqlQueryBuilder.php b/src/QueryBuilder/SqlQueryBuilder.php
index 987e4b5..13254bf 100644
--- a/src/QueryBuilder/SqlQueryBuilder.php
+++ b/src/QueryBuilder/SqlQueryBuilder.php
@@ -2,20 +2,18 @@
 
 namespace Ulmus\QueryBuilder;
 
-use Ulmus\Query;
-use Ulmus\Query\Fragment;
-use Ulmus\Query\QueryBuilderInterface;
+use Ulmus\Query\QueryFragmentInterface;
 
 # TODO -> Extract from MysqlQueryBuilder to build an ISO/IEC 9075:2023 compatible layer for a basic SQL QueryBuilder
-class SqlQueryBuilder implements Query\QueryBuilderInterface
+class SqlQueryBuilder implements QueryBuilderInterface
 {
 
-    public function push(Fragment $queryFragment): Query\QueryBuilderInterface
+    public function push(QueryFragmentInterface $queryFragment): QueryBuilderInterface
     {
         // TODO: Implement push() method.
     }
 
-    public function pull(Fragment $queryFragment): Query\QueryBuilderInterface
+    public function pull(QueryFragmentInterface $queryFragment): QueryBuilderInterface
     {
         // TODO: Implement pull() method.
     }
@@ -30,12 +28,12 @@ class SqlQueryBuilder implements Query\QueryBuilderInterface
         // TODO: Implement reset() method.
     }
 
-    public function getFragment(string $class, int $index = 0): ?Fragment
+    public function getFragment(string $class, int $index = 0): ?QueryFragmentInterface
     {
         // TODO: Implement getFragment() method.
     }
 
-    public function removeFragment(Fragment|\Stringable|array|string $fragment): void
+    public function removeFragment(QueryFragmentInterface|\Stringable|array|string $fragment): void
     {
         // TODO: Implement removeFragment() method.
     }
diff --git a/src/Repository.php b/src/Repository.php
index 7deb446..953b73a 100644
--- a/src/Repository.php
+++ b/src/Repository.php
@@ -29,7 +29,7 @@ class Repository
 
     public array $events = [];
 
-    protected Query\QueryBuilderInterface $queryBuilder;
+    protected QueryBuilder\QueryBuilderInterface $queryBuilder;
 
     protected EntityResolver $entityResolver;
 
@@ -383,7 +383,7 @@ class Repository
         }
     }
 
-    public function removeQueryFragment(null|Query\Fragment|string|array $fragment) : self
+    public function removeQueryFragment(null|Query\QueryFragmentInterface|string|array $fragment) : self
     {
         foreach((array) $fragment as $item) {
             $this->queryBuilder->removeFragment($item);
diff --git a/src/SearchRequest/SearchRequestFromRequestTrait.php b/src/SearchRequest/SearchRequestFromRequestTrait.php
index 811439a..fda4aa4 100644
--- a/src/SearchRequest/SearchRequestFromRequestTrait.php
+++ b/src/SearchRequest/SearchRequestFromRequestTrait.php
@@ -46,38 +46,43 @@ trait SearchRequestFromRequestTrait
 
                 $field = (string) $fieldName;
 
-                switch ($attribute->method) {
-                    case SearchMethodEnum::Where:
-                        $this->wheres[$field] = $this->$propertyName;
-                        break;
-
-                    case SearchMethodEnum::Like:
-                        $this->likes[$field] = "%{$this->$propertyName}%";
-                        break;
-
-                    case SearchMethodEnum::LikeLeft:
-                        $this->likes[$field] = "%{$this->$propertyName}";
-                        break;
-
-                    case SearchMethodEnum::LikeRight:
-                        $this->likes[$field] = "{$this->$propertyName}%";
-                        break;
-
-                    case SearchMethodEnum::OrderByAsc:
-                        $this->orders[$field] = "ASC";
-                        break;
-
-                    case SearchMethodEnum::OrderByDesc:
-                        $this->orders[$field] = "DESC";
-                        break;
-
-                    case SearchMethodEnum::GroupBy:
-                        $this->groups[$field] = "DESC";
-                        break;
-                }
+                $this->parseAttributeMethod($attribute, $field, $propertyName);
             }
         }
 
         return $this;
     }
+
+    protected function parseAttributeMethod(object $attribute, string $field, string $propertyName,) : void
+    {
+        switch ($attribute->method) {
+            case SearchMethodEnum::Where:
+                $this->wheres[$field] = $this->$propertyName;
+                break;
+
+            case SearchMethodEnum::Like:
+                $this->likes[$field] = "%{$this->$propertyName}%";
+                break;
+
+            case SearchMethodEnum::LikeLeft:
+                $this->likes[$field] = "%{$this->$propertyName}";
+                break;
+
+            case SearchMethodEnum::LikeRight:
+                $this->likes[$field] = "{$this->$propertyName}%";
+                break;
+
+            case SearchMethodEnum::OrderByAsc:
+                $this->orders[$field] = "ASC";
+                break;
+
+            case SearchMethodEnum::OrderByDesc:
+                $this->orders[$field] = "DESC";
+                break;
+
+            case SearchMethodEnum::GroupBy:
+                $this->groups[$field] = "DESC";
+                break;
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/Ulmus.php b/src/Ulmus.php
index 1e9527a..3753635 100644
--- a/src/Ulmus.php
+++ b/src/Ulmus.php
@@ -8,8 +8,10 @@ use Psr\SimpleCache\CacheInterface;
 
 abstract class Ulmus
 {
+    # @todo Remove, unused, now defined by the adapter (logically, right ?)
     public static string $repositoryClass = "\\Ulmus\\Repository";
 
+    # @todo Remove, unused, now defined by the adapter (logically, right ?)
     public static string $queryBuilderClass = "\\Ulmus\\QueryBuilder";
 
     public static array $registeredAdapters = [];
@@ -22,19 +24,16 @@ abstract class Ulmus
     
     public static array $resolved = [];
 
-    public static function iterateQueryBuilder(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null) : Generator
+    public static function iterateQueryBuilder(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null) : Generator
     {
-        $rendered = $queryBuilder->render();
-        $statement = ( $adapter ?: static::$defaultAdapter )->connector()->select($rendered, $queryBuilder->parameters ?? []);
-
-        $i = 0;
+        $statement = ( $adapter ?: static::$defaultAdapter )->connector()->select($queryBuilder->render(), $queryBuilder->parameters ?? []);
 
         while ( $row = $statement->fetch()  ) {
             yield $row;
         }
 
         $statement->closeCursor();
-        
+
         $queryBuilder->reset();
         
         return [
@@ -42,13 +41,11 @@ abstract class Ulmus
         ];
     }
     
-    public static function datasetQueryBuilder(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null) : array
+    public static function datasetQueryBuilder(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null) : array
     {
         $rows = [];
 
-        $rendered = $queryBuilder->render();
-        
-        $statement = ( $adapter ?: static::$defaultAdapter )->connector()->select($rendered, $queryBuilder->parameters ?? []);
+        $statement = ( $adapter ?: static::$defaultAdapter )->connector()->select($queryBuilder->render(), $queryBuilder->parameters ?? []);
 
         while ( $row = $statement->fetch() ) {
             $rows[] = $row;
@@ -66,7 +63,7 @@ abstract class Ulmus
         return ( $adapter ?: static::$defaultAdapter )->connector();
     }
     
-    public static function runSelectQuery(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
+    public static function runSelectQuery(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
     {   
         $dataset = static::connector($adapter)->select($queryBuilder->render(), array_merge($queryBuilder->values ?? [], $queryBuilder->parameters ?? []));
         $queryBuilder->reset();
@@ -74,15 +71,16 @@ abstract class Ulmus
         return $dataset;
     }
     
-    public static function runQuery(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
+    public static function runQuery(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
     {   
         $return = static::connector($adapter)->runQuery($queryBuilder->render(), array_merge($queryBuilder->values ?? [], $queryBuilder->parameters ?? []));
+
         $queryBuilder->reset();
         
         return $return;
     }
 
-    public static function runInsertQuery(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
+    public static function runInsertQuery(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
     {
         $return = static::connector($adapter)->runInsertQuery($queryBuilder->render(),$queryBuilder->values ?? []);
         $queryBuilder->reset();
@@ -90,7 +88,7 @@ abstract class Ulmus
         return $return;
     }
 
-    public static function runUpdateQuery(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
+    public static function runUpdateQuery(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
     {
         $return = static::connector($adapter)->runUpdateQuery($queryBuilder->render(), array_merge($queryBuilder->values ?? [], $queryBuilder->parameters ?? []));
         $queryBuilder->reset();
@@ -98,7 +96,7 @@ abstract class Ulmus
         return $return;
     }
 
-    public static function runDeleteQuery(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
+    public static function runDeleteQuery(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null)
     {
         $return = static::connector($adapter)->runDeleteQuery($queryBuilder->render(), array_merge($queryBuilder->values ?? [], $queryBuilder->parameters ?? []));
         $queryBuilder->reset();
@@ -119,7 +117,7 @@ abstract class Ulmus
         return new $cls($entityClass, $alias, $adapter);
     }
 
-    public static function queryBuilder($entityClass, ...$arguments) : Query\QueryBuilderInterface
+    public static function queryBuilder($entityClass, ...$arguments) : QueryBuilder\QueryBuilderInterface
     {
         $cls = $entityClass::resolveEntity()->sqlAdapter()->adapter()->queryBuilderClass();
 
@@ -155,7 +153,7 @@ abstract class Ulmus
         static::$registeredAdapters[$adapter->name] = $adapter;
     }
     
-    protected static function fetchQueryBuilder(Query\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null) : array
+    protected static function fetchQueryBuilder(QueryBuilder\QueryBuilderInterface $queryBuilder, ? ConnectionAdapter $adapter = null) : array
     {
         $result = ( $adapter ?: static::$defaultAdapter )->connector->select($queryBuilder->render(), $queryBuilder->parameters ?? [])->fetchAll();
         $queryBuilder->reset();