From abd0f3fbf3c47068f800b51f775c2c7064675ef0 Mon Sep 17 00:00:00 2001
From: Mason Dechaineux <masonpcd@gmail.com>
Date: Fri, 21 Aug 2020 09:25:27 +1000
Subject: [PATCH] Fix DataList->column mutating underlying DataQuery

---
 src/ORM/DataList.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ORM/DataList.php b/src/ORM/DataList.php
index b494c7441..26069cb3a 100644
--- a/src/ORM/DataList.php
+++ b/src/ORM/DataList.php
@@ -1014,7 +1014,8 @@ class DataList extends ViewableData implements SS_List, Filterable, Sortable, Li
      */
     public function column($colName = "ID")
     {
-        return $this->dataQuery->distinct(false)->column($colName);
+        $dataQuery = clone $this->dataQuery;
+        return $dataQuery->distinct(false)->column($colName);
     }
 
     /**