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PDF annotator database uery

 
Picture of Barry Matthias
PDF annotator database uery
 

Hi All


Can anyone tell me if the following query should return any rows from the database


select id from mdl_assignfeedback_editpdf_queue where not exists (select * from mdl_assign_submission where mdl_assign_submission.id=mdl_assignfeedback_editpdf_queue.submissionid);


Thanks

 
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