[GV-21] Create New Database Queries for Instructor Dash

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Linear Ticket

Linear Ticket

Description

Need new database queries so that we can grab information relevant to the instructor dashboard.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change)
• Breaking change (fix or feature that would change existing functionality)

Changes

Added queries to api/lib/redisHelper.mjs, and added a new .mjs file to test those queries. The new queries aim to:

1. Get average score on an assignment 

2. Get maximum score on an assignment

3. Get minimum (non n/a) score on an assignment

4. Get top k students in terms of score for an assignment

5. Get top k students in terms of total course score

Testing

Tested manually in docker. The output is below:

If one wants to manually check these results as I did, use this HAID sheet. Instruction on how to do so can be found in the api/testAssignmentQueries.mjs file.

Checklist

• My branch name matches the format: <ticket-id>/<brief-description-of-change>
• My PR name matches the format: [<ticket-id>] <brief-description-of-change>
• I have added doc-comments to all new functions (JSDoc for JS and Docstrings for Python)
• I have reviewed all of my code
• My code only contains major changes related to my ticket

Screenshots/Video

Additional Notes

[linear]

GV-21 Create new database queries for the "Assignments" tab