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MDL-46044 Assign: Add conditions to the inner query for performance

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This commit is contained in:
Damyon Wiese 2014-06-27 14:58:58 +08:00
parent 6447021bc0
commit 92d78aace8
1 changed files with 5 additions and 3 deletions
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8
mod/assign/lib.php
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@ -392,11 +392,12 @@ function assign_print_overview($courses, &$htmlarray) {
if (!isset($unmarkedsubmissions)) {
$submissionmaxattempt = 'SELECT mxs.userid, MAX(mxs.attemptnumber) AS maxattempt, mxs.assignment
FROM {assign_submission} mxs
WHERE mxs.assignment ' . $sqlassignmentids . '
GROUP BY mxs.userid, mxs.assignment';
// Build up and array of unmarked submissions indexed by assignment id/ userid
// for use where the user has grading rights on assignment.
$dbparams = array_merge(array(ASSIGN_SUBMISSION_STATUS_SUBMITTED), $assignmentidparams);
$dbparams = array_merge($assignmentidparams, array(ASSIGN_SUBMISSION_STATUS_SUBMITTED), $assignmentidparams);
$rs = $DB->get_recordset_sql('SELECT
s.assignment as assignment,
s.userid as userid,
@ -451,10 +452,12 @@ function assign_print_overview($courses, &$htmlarray) {
// This is nasty because we only want the last attempt.
$submissionmaxattempt = 'SELECT mxs.userid, MAX(mxs.attemptnumber) AS maxattempt, mxs.assignment
FROM {assign_submission} mxs
WHERE mxs.assignment ' . $sqlassignmentids . '
AND mxs.userid = ?
GROUP BY mxs.userid, mxs.assignment';
// Get all user submissions, indexed by assignment id.
$dbparams = array_merge(array($USER->id, $USER->id, $USER->id, $USER->id), $assignmentidparams);
$dbparams = array_merge($assignmentidparams, array($USER->id, $USER->id, $USER->id), $assignmentidparams);
$mysubmissions = $DB->get_records_sql('SELECT
a.id AS assignment,
a.nosubmissions AS nosubmissions,
@ -464,7 +467,6 @@ function assign_print_overview($courses, &$htmlarray) {
s.status AS status
FROM {assign} a
LEFT JOIN ( ' . $submissionmaxattempt . ' ) smx ON
smx.userid = ? AND
smx.assignment = a.id
LEFT JOIN {assign_grades} g ON
g.assignment = a.id AND