
1. Add index on testrun.submissionId 2. replace lti_parameters.size with lti_parameters.present? to prevent COUNT query Signed-off-by: Sebastian Serth <Sebastian.Serth@student.hpi.de>
1. Add index on testrun.submissionId 2. replace lti_parameters.size with lti_parameters.present? to prevent COUNT query Signed-off-by: Sebastian Serth <Sebastian.Serth@student.hpi.de>