Rewrite student_search_table query #49

Job	Run time
ci / check if job needs to run	5s
ci / prepare test matrix	16s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - local_assessfreq	6m 19s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - local_assessfreq	6m 26s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - local_assessfreq	6m 40s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - local_assessfreq	6m 40s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - local_assessfreq	6m 52s
ci / MOODLE_402_STABLE - pgsql - php 8.0 - local_assessfreq	5m 58s
ci / MOODLE_402_STABLE - mariadb - php 8.0 - local_assessfreq	6m 5s
ci / MOODLE_402_STABLE - pgsql - php 8.1 - local_assessfreq	5m 57s
ci / MOODLE_402_STABLE - mariadb - php 8.1 - local_assessfreq	6m 8s
ci / MOODLE_403_STABLE - pgsql - php 8.0 - local_assessfreq	6m 50s
ci / MOODLE_403_STABLE - mariadb - php 8.0 - local_assessfreq	6m 42s
ci / MOODLE_403_STABLE - mariadb - php 8.2 - local_assessfreq	6m 46s
ci / MOODLE_403_STABLE - pgsql - php 8.2 - local_assessfreq	6m 58s
ci / Release to the Moodle plugin directory	0s
	1h 24m 42s

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