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MDL-43797 lib/db/upgrade.php: Optimise sql for my_pages deletion

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Change-Id: Idf300ab07afda3bcefea80e617549f40c710e529
This commit is contained in:
David Curry 2014-01-28 11:56:37 +13:00
parent a5ab83ac5e
commit c8ade8cbdc
1 changed files with 7 additions and 6 deletions
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13
lib/db/upgrade.php
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@ -2929,12 +2929,13 @@ function xmldb_main_upgrade($oldversion) {
if ($oldversion < 2014012300.01) {
// Remove deleted users home pages.
$active = $DB->get_fieldset_select('user', 'id', 'deleted = ?', array(0));
list($insql, $params) = $DB->get_in_or_equal($active, SQL_PARAMS_QM, 'param', false);
$sql = 'DELETE FROM {my_pages}
WHERE userid ' . $insql;
$DB->execute($sql, $params);
$sql = "DELETE FROM {my_pages}
WHERE EXISTS (SELECT {user}.id
FROM {user}
WHERE {user}.id = {my_pages}.userid
AND {user}.deleted = 1)
AND {my_pages}.private = 1";
$DB->execute($sql);
// Reached main savepoint.
upgrade_main_savepoint(true, 2014012300.01);