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MDL-61814 report_stats: Update to sql to increase performance.

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This commit is contained in:
Adrian Greeve 2018-05-11 10:02:34 +08:00
parent e4ad3ee714
commit 28f3776451
1 changed files with 17 additions and 6 deletions
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23
report/stats/classes/privacy/provider.php
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@ -87,16 +87,27 @@ class provider implements \core_privacy\local\metadata\provider, \core_privacy\l
* @return contextlist $contextlist The contextlist containing the list of contexts used in this plugin.
*/
public static function get_contexts_for_userid(int $userid) : contextlist {
$params = ['dailyuser' => $userid, 'weeklyuser' => $userid, 'monthlyuser' => $userid, 'contextcourse' => CONTEXT_COURSE];
$params = ['userid' => $userid, 'contextcourse' => CONTEXT_COURSE];
$sql = "SELECT ctx.id
FROM {context} ctx
LEFT JOIN {stats_user_daily} sud ON sud.courseid = ctx.instanceid
LEFT JOIN {stats_user_weekly} suw ON suw.courseid = ctx.instanceid
LEFT JOIN {stats_user_monthly} sum ON sum.courseid = ctx.instanceid
WHERE ctx.contextlevel = :contextcourse
AND (sud.userid = :dailyuser OR suw.userid = :weeklyuser OR sum.userid = :monthlyuser)";
JOIN {stats_user_daily} sud ON sud.courseid = ctx.instanceid AND sud.userid = :userid
WHERE ctx.contextlevel = :contextcourse";
$contextlist = new contextlist();
$contextlist->add_from_sql($sql, $params);
$sql = "SELECT ctx.id
FROM {context} ctx
JOIN {stats_user_weekly} suw ON suw.courseid = ctx.instanceid AND suw.userid = :userid
WHERE ctx.contextlevel = :contextcourse";
$contextlist->add_from_sql($sql, $params);
$sql = "SELECT ctx.id
FROM {context} ctx
JOIN {stats_user_monthly} sum ON sum.courseid = ctx.instanceid AND sum.userid = :userid
WHERE ctx.contextlevel = :contextcourse";
$contextlist->add_from_sql($sql, $params);
return $contextlist;
}