- Fixed the missing DISTINCT keyword while rendering select()

- Added a fragment remover in Repository

src/Query/Select.php

@@ -48,6 +48,7 @@ class Select extends Fragment {
         return $this->renderSegments([
             ( $this->union ? 'UNION' : false ),
             static::SQL_TOKEN,
+            ( $this->distinct ? 'DISTINCT' : false ),
             ( $this->top ? sprintf('TOP (%s)', $this->top) : false ),
             implode(', ', $this->fields)
         ]);

src/Repository.php

@@ -271,6 +271,13 @@ class Repository
         }
     }
 
+    public function removeQueryFragment(Query\Fragment $fragment) : self
+    {
+        $this->queryBuilder->removeFragment($fragment);
+
+        return $this;
+    }
+
     public function select(/*array|Stringable*/ $fields) : self
     {
         $this->queryBuilder->select($fields);
@@ -278,6 +285,14 @@ class Repository
         return $this;
     }
 
+    public function distinct(/*array|Stringable*/ $fields) : self
+    {
+        $this->queryBuilder->select($fields);
+        $this->queryBuilder->getFragment(Query\Select::class)->distinct = true;
+
+        return $this;
+    }
+
     public function insert(array $fieldlist, string $table, string $alias, ? string $schema) : self
     {
         $this->queryBuilder->insert($fieldlist, $this->escapeTable($table), $alias, $this->escapedDatabase(), $schema);