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|
<?php
/**
* @see https://gitlab.studip.de/studip/studip/-/issues/4097
*/
return new class extends Migration
{
public function description()
{
return 'Removes orhpaned blubber entries';
}
protected function up()
{
$query = "DELETE bt, ouv
FROM `blubber_threads` AS bt
LEFT JOIN `object_user_visits` AS ouv
ON (bt.`thread_id` = ouv.`object_id`)
WHERE bt.`external_contact` = 0
AND bt.`thread_id` != 'global'
AND bt.`user_id` != ''
AND bt.`user_id` NOT IN (
SELECT `user_id` FROM `auth_user_md5`
)";
DBManager::get()->exec($query);
$query = "DELETE FROM `blubber_comments`
WHERE (
`external_contact` = 0
AND `user_id` NOT IN (
SELECT `user_id` FROM `auth_user_md5`
)
) OR `thread_id` NOT IN (
SELECT `thread_id` FROM `blubber_threads`
)";
DBManager::get()->exec($query);
$query = "DELETE FROM `blubber_mentions`
WHERE (
`external_contact` = 0
AND `user_id` NOT IN (
SELECT `user_id` FROM `auth_user_md5`
)
) OR `thread_id` NOT IN (
SELECT `thread_id` FROM `blubber_threads`
)";
DBManager::get()->exec($query);
}
};
|
