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Fix Calendar sends duplicate notifications if there is an additional attendee (#21370) #30980

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Fix Calendar sends duplicate notifications if there is an additional attendee (#21370) #30980

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6497f47
Fix #21370
kominoshja Feb 2, 2022
b561f15
Update Backend.php
kominoshja Mar 8, 2022
38ae202
Merge branch 'master' into patch-1
miaulalala Mar 14, 2022
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3 changes: 2 additions & 1 deletion apps/dav/lib/CalDAV/Reminder/Backend.php
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,8 @@ public function getRemindersToProcess():array {
->from('calendar_reminders', 'cr')
->where($query->expr()->lte('cr.notification_date', $query->createNamedParameter($this->timeFactory->getTime())))
->join('cr', 'calendarobjects', 'co', $query->expr()->eq('cr.object_id', 'co.id'))
->join('cr', 'calendars', 'c', $query->expr()->eq('cr.calendar_id', 'c.id'));
->join('cr', 'calendars', 'c', $query->expr()->eq('cr.calendar_id', 'c.id'))
->groupBy(['cr.event_hash','cr.type','cr.uid']);
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This fails on some DB configurations:
https://dev.mysql.com/doc/refman/8.0/en/sql-mode.html#sqlmode_only_full_group_by

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good to know. I guess I have to do the grouping in memory.

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Select those columns on L67 as well, then you can still run this on the DB

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Select those columns on L67 as well

That's not right it. It's the other way around: All items that are selected need to be aggregated.
But I agree, if we previously did not group on db level, just group manually in php.

$stmt = $query->execute();

return array_map(
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