Debug info: SQLState: 42000<br>

Error Code: 306<br>

Message: [Microsoft][SQL Server Native Client 10.0][SQL Server]The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator.<br>

SELECT u.id,u.picture,u.firstname,u.lastname,u.imagealt,u.email,

s.id AS submissionid, s.grade, s.submissioncomment,

s.timemodified, s.timemarked,

CASE WHEN s.timemarked > 0 AND s.timemarked >= s.timemodified THEN 1

ELSE 0 END AS status FROM mdl_user u LEFT JOIN mdl_assignment_submissions s ON u.id = s.userid

AND s.assignment = 34 WHERE u.id IN (3,12,25,55,85,101,105,180,199,200,201,204,205,221,223,224,226,227,228,231,240,241,242,243,244,245,247,249,250,252,253,254,256,258,259,261,262,263,265,266,267,268,269,330,429,432) ORDER BY submissioncomment ASC, grade ASC

[array (

)]

Stack trace:

line 394 of \lib\dml\moodle_database.php: dml_read_exception thrown

line 252 of \lib\dml\sqlsrv_native_moodle_database.php: call to moodle_database->query_end()

line 368 of \lib\dml\sqlsrv_native_moodle_database.php: call to sqlsrv_native_moodle_database->query_end()

line 773 of \lib\dml\sqlsrv_native_moodle_database.php: call to sqlsrv_native_moodle_database->do_query()

line 807 of \lib\dml\sqlsrv_native_moodle_database.php: call to sqlsrv_native_moodle_database->get_recordset_sql()

line 1403 of \mod\assignment\lib.php: call to sqlsrv_native_moodle_database->get_records_sql()

line 662 of \mod\assignment\lib.php: call to assignment_base->display_submissions()

line 369 of \mod\assignment\type\upload\assignment.class.php: call to assignment_base->submissions()

line 57 of \mod\assignment\submissions.php: call to assignment_upload->submissions()