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Base de données, Tables, Vues, Index et syntaxe SQL
Thanks so far everyone,
I have got the results I want but now I want to join them. When I do two different select statements I get the right results. But when I join them I don't get the combined student counts for the two select statements
select courseprogram.programid, studentcourse.courseid, &groupchoice as mygroup,;
instructor.ifname, count(studentcourse.instructorid) as numstud, studentcourse.instructorid,;
nvl(program.program, " ") as program;
from studentcourse left join instructor on studentcourse.instructorid = instructor.instructorid,;
courseprogram left join program on courseprogram.programid = program.programid;
where courseprogram.courseid = studentcourse.courseid;
and studentcourse.startdate >= {12/01/1999};
and (studentcourse.dropdate != {};
and (month(studentcourse.dropdate) - month(studentcourse.startdate) >= 1;
or year(studentcourse.dropdate) - year(studentcourse.startdate) >= 1));
and studentcourse.iscomplete = .F.;
group by mygroup, studentcourse.courseid, studentcourse.instructorid;
into cursor cltemp
In this select statement for the course ID RSP120 I get 1 student. Which is correct
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select courseprogram.programid, studentcourse.courseid, &groupchoice as mygroup,;
instructor.ifname, count(studentcourse.instructorid) as numstud, studentcourse.instructorid,;
nvl(program.program, " ") as program;
from studentcourse left join instructor on studentcourse.instructorid = instructor.instructorid,;
courseprogram left join program on courseprogram.programid = program.programid;
where courseprogram.courseid = studentcourse.courseid;
and studentcourse.startdate >= {12/01/1999};
and studentcourse.dropdate == {};
and studentcourse.iscomplete = .F.;
group by mygroup, studentcourse.courseid, studentcourse.instructorid;
into cursor clbudgetnew
For this one I get 2 students for RSP120 which is correct. So I thought by using a union select I would get a total of 3 students which I am looking for as well as everything else selected. I know understand that this might not be the way to do this. So if anyone could give some advice that would be cool.
Thanks,
Tyler
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