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MDL-54797 course: Add indexed field to condition of delete query

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Deleting records from the course_completion_criteria table goes much
faster when we include the indexed course field in the delete query.
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Adam Olley 2016-06-02 15:42:16 +09:30
parent 6a74e76fb8
commit e9f7c4a4b2
1 changed files with 1 additions and 0 deletions
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course/lib.php
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@ -1772,6 +1772,7 @@ function course_delete_module($cmid) {
// very quick on an empty table).
$DB->delete_records('course_modules_completion', array('coursemoduleid' => $cm->id));
$DB->delete_records('course_completion_criteria', array('moduleinstance' => $cm->id,
'course' => $cm->course,
'criteriatype' => COMPLETION_CRITERIA_TYPE_ACTIVITY));
// Delete all tag instances associated with the instance of this module.