[tselot-t]

What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)

I ran some queries in a database to analyze and reorganize the data.

What did you learn from the changes you have made?

I learned how to run some aggregate, filter, and reorganize a database.

Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?

I was considering whether the second join query could be done with LEFT JOIN instead of the INNER JOIN. I'm trying to understand in what cases both options could be used versus other cases where you can only use one of the options.

Were there any challenges? If so, what issue(s) did you face? How did you overcome it?

I had some challenges with the VALUES query because it wasn't covered in detail, but I was able to figure it out after researching the INSERT INTO query.

How were these changes tested?

I tested the changes by running the simpler components of the code first and then progressively adding more code. I commented out parts that didn't work to isolate the part that was causing errors.

A reference to a related issue in your repository (if applicable)

Checklist

• I can confirm that my changes are working as intended

[github-actions]

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