Dashboard widget "My last changed tickets": Increased performance of …

…database query.
znuny · Feb 28, 2024 · 78a38d4 · 78a38d4
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diff --git a/CHANGES.md b/CHANGES.md
@@ -1,4 +1,5 @@
 # 6.5.7 2024-??-??
+ - 2024-02-13 Dashboard widget "My last changed tickets": Increased performance of database query.
  - 2024-02-27 Fixed a variable for sha512 in Auth::DB. [#379](https://github.com/znuny/Znuny/issues/379)
  - 2024-02-22 Fix for generic agent: Scheduled job immediate executed after schedule was changed. Thanks to Paweł Bogusławski (@pboguslawski). [#406](https://github.com/znuny/Znuny/pull/406)
  - 2022-02-22 Removed initial insert of `TransportEmailTemplate` in `notification_event_item` table for mention notification and ticket email delivery failure notification. Thanks to Paweł Bogusławski (@pboguslawski). [#397](https://github.com/znuny/Znuny/pull/397)

diff --git a/Kernel/Output/HTML/Dashboard/MyLastChangedTickets.pm b/Kernel/Output/HTML/Dashboard/MyLastChangedTickets.pm
@@ -89,11 +89,11 @@ sub Run {
     my $UserLimit = $Preferences{ $Self->{PrefKeyShown} };
     my $Limit     = $UserLimit || $Self->{Config}->{Limit} || 10;
 
-    my $SQL = 'SELECT ticket_id, MAX(change_time) max_t '
-        . 'FROM ticket_history '
-        . 'WHERE change_by = ? '
-        . 'GROUP BY ticket_id '
-        . 'ORDER BY max_t desc';
+    my $SQL = 'SELECT   id
+               FROM     ticket
+               WHERE    change_by = ?
+               ORDER BY change_time DESC
+    ';
 
     return if !$DBObject->Prepare(
         SQL   => $SQL,