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221
if (!$dbman->field_exists($table, $field)) {
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222
// OK safe to cleanup duplicates here.
224
$sql = 'SELECT assignment, userid, groupid from {assign_submission} GROUP BY assignment, userid, groupid HAVING (count(id) > 1)';
225
226
$badrecords = $DB->get_recordset_sql($sql);
227
228
foreach ($badrecords as $badrecord) {