From e3e949202b064fa43577fdef0d1d7f520846faeb Mon Sep 17 00:00:00 2001
From: Zlatoslav <px.zlodes@gmail.com>
Date: Mon, 13 Feb 2017 01:47:09 +0300
Subject: [PATCH] Added $row[0] check in QBHandler::aggregate

---
 src/Pixie/QueryBuilder/QueryBuilderHandler.php | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/Pixie/QueryBuilder/QueryBuilderHandler.php b/src/Pixie/QueryBuilder/QueryBuilderHandler.php
index 134fba0..065cb4f 100644
--- a/src/Pixie/QueryBuilder/QueryBuilderHandler.php
+++ b/src/Pixie/QueryBuilder/QueryBuilderHandler.php
@@ -258,10 +258,12 @@ protected function aggregate($type)
             unset($this->statements['selects']);
         }
 
-        if (is_array($row[0])) {
-            return (int) $row[0]['field'];
-        } elseif (is_object($row[0])) {
-            return (int) $row[0]->field;
+        if (isset($row[0])) {
+            if (is_array($row[0])) {
+                return (int) $row[0]['field'];
+            } elseif (is_object($row[0])) {
+                return (int) $row[0]->field;
+            }
         }
 
         return 0;