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Average score per subject — practice · DataDesk

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Aggregates & GROUP BY(15 / 20)

Intermediate

Average score per subject

For each subject_id, return the average final exam score as avg_final, rounded to 1 decimal.

Tables

fees

student_idinteger
amountinteger
due_datedate
paid_datedate

marks

student_idinteger
subject_idinteger
examvarchar
scoreinteger

students

student_idinteger
namevarchar
classvarchar
gendervarchar
dobdate
cityvarchar

subjects

subject_idinteger
subject_namevarchar

Expected output

5 rows with columns subject_id, avg_final

Hints(0/2)

Solution

Unlocks after you solve it or after 3 submissions

SQL (DuckDB)

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Run your code to see the output here.