troubleshooting Question

using case when with count and partition by functions in an oracle query

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Basssque asked on
Oracle DatabaseSQL
7 Comments1 Solution1858 ViewsLast Modified:
I hope this makes sense.
I need to count 1 for each student who has a particular attendance code at least once.
I wrote the following statement but it doesn't seem to work as expected, I assume I'm not using the correct logic.  Can anyone help?

CASE WHEN Attendance_Code.Att_Code in ('HB') AND STUDENTS.grade_level = '12' THEN count(*) over (partition by students.student_number) end "12"
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