From 123ff76064f5b0562921491665fe3f0cf68b3196 Mon Sep 17 00:00:00 2001
From: Nathan Gass
Date: Thu, 28 Sep 2017 14:39:22 +0200
Subject: only select ID for delete_untouched (memory and speed)

---
 it_dbi.class | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/it_dbi.class b/it_dbi.class
index 1c30d6f..8fb32f0 100644
--- a/it_dbi.class
+++ b/it_dbi.class
@@ -819,7 +819,7 @@ function delete($query = null)
  */
 function delete_untouched($query = null)
 {
-	if ($this->select($query))
+	if ($this->select(['SELECT' => $this->_p['keyfield']] + (array)$query))
 		while ($this->iterate())
 			if (($id = $this->_key) && !$this->_touchedids[$id])
 				$result += $this->delete();
-- 
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