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MDL-64883 mod_chat: Fix SQL in cron

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This commit is contained in:
Andrew Nicols 2019-03-07 17:30:31 +08:00
parent 9f909b1c75
commit 771a8c3c95
1 changed files with 2 additions and 2 deletions
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4
mod/chat/classes/task/cron_task.php
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@ -57,8 +57,8 @@ class cron_task extends \core\task\scheduled_task {
$subselect = "SELECT c.keepdays
FROM {chat} c
WHERE c.id = {chat_messages}.chatid";
$DB->delete_records_select('chat_messages', "($subselect) > 0 AND timestamp < ?",
[$timenow - ($subselect) * DAYSECS]);
$DB->delete_records_select('chat_messages', "($subselect) > 0 AND timestamp < (? - ($subselect) * ?)",
[$timenow, DAYSECS]);
$DB->delete_records_select('chat_messages_current', "timestamp < ?", [$timenow - 8 * HOURSECS]);
}