unbreak GROUP BY statements in aggregation mode

Author: mtierltd

lib/Db/ReportItemMapper.php

@@ -67,7 +67,7 @@ public function report($user, $from, $to, $filterProjectId, $filterClientId, $fi
             }elseif ($timegroup == 'month') {
                 $selectFields[]= "to_char(to_timestamp(start), 'YYYY-MM') as ftime";
             }else {
-                $selectFields[]= "start as ftime";
+                $selectFields[]= "min(start) as ftime";
             }
         } else if ($this->dbengine == 'SQLITE') {
             if ($timegroup == 'week') {
@@ -77,7 +77,7 @@ public function report($user, $from, $to, $filterProjectId, $filterClientId, $fi
             }elseif ($timegroup == 'month') {
                 $selectFields[]= "strftime('%Y-%m', datetime(start, 'unixepoch')) as ftime";
             }else {
-                $selectFields[]= "start as ftime";
+                $selectFields[]= "min(start) as ftime";
             }
         } else {
             if ($timegroup == 'week') {
@@ -87,7 +87,7 @@ public function report($user, $from, $to, $filterProjectId, $filterClientId, $fi
             }elseif ($timegroup == 'month') {
                 $selectFields[]= "DATE_FORMAT(FROM_UNIXTIME(start),'%Y-%m') as ftime";
             }else {
-                $selectFields[]= "start as ftime";
+                $selectFields[]= "min(start) as ftime";
             }
         }