MeritKeep

SELECT and projection

Choosing which columns to return, aliasing them, and computing derived columns in the SELECT list.

foundational~1hWe mark it against a checklist you can read first
The barWhat counts as knowing this

Write a SELECT that returns exactly the columns asked for, with clear aliases

That sentence is the bar. It only counts once your work shows you can do it. Reading about it does not.
Prove itA check for this one skill

Up to 3 questions on this skill alone, marked against the bar beside this. It stops as soon as the answer is clear. No account, and your answers are not kept.

01 · Prerequisites

Where it sits

No prerequisites — this is a starting point in SQL & Data Analysis.
03 · What comes next

What it unlocks

Start on SQL & Data Analysis

Every skill above, ordered by what depends on what, with the projects above that as the evidence you actually did it. We work out where you already are first, so the path skips what you can do.

About three minutes to set up. Nothing is marked until you hand something in.Start this path
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