sql - How to show the names of non-participants in the all last sending quizzes in each division? -


i developing training management web-based system provides user short quizzes refresh knowledge. anyway, have following database design:

employee table: username, name, divisioncode divisions table: sapcode, divisionshortcut quiz table: quizid, title, issent question table: questionid, question, quizid... userquiz table: userquizid, quizid, username, score.

i able come query shows names of non-participants in divisions in last quiz. want show non-participants names in quizzes have been sent users participate in them. results should listed grouping quiz title , divisionshortcut. so how that?

my query:

select d.divisionshortcut, e.name  employee e  join divisions d on (e.divisioncode = d.sapcode)  left join (select a.quizid, a.username              userquiz join                   (select max(quizid) quizid dbo.quiz issent=1) b                        on a.quizid = b.quizid ) c                                  on e.username = c.username                                  c.quizid null                                  order d.divisionshortcut

you can use cross join combinations of employee , quiz, use not exists eliminate combinations have been completed:

select  *    employee e         inner join divisions d             on e.divisioncode = d.sapcode         cross join quiz   quiz.issent = 1  ,     not exists         (   select  1                userquiz uq               uq.quizid = quiz.quizid             ,     uq.username = e.username         )

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