ChallengeEnvironmentSQL+20 XP

Data Analytics case 22: SQL grouping for Environment

Scenario

You are a data professional. A coastal clean-up charity has an issue: managers want to compare every river side by side. As a Data Analyst, you are tasked to solve it.

Question

Group the rows and total each group.

Your task

Read the problem
Write your solution in the editor
Press Check my answer
Deliverable: Total per group
On success it is published as its own portfolio project

SQL groupingData AnalyticsProblem solving

Read the simple theory: Root-cause analysis

Data Analytics · Problem Solving & Root Cause Analysis — question 22 of 30

Finish all 30 to earn a certificate

1. Choose your dataset

Pick an industry and a size. Your code and results change to match.

IndustrySize

sql editorwater_tests

Snippets

💡 Explain my whole code, line by line (hover any word in the editor for a tip)

🌈 In short — no coding words

📂 Opens the "water_tests" table→✅ Shows you the answer

Altogether: this query reads your industry table, picks what you need, and shows the answer as rows.

Start typing to see suggestions. Press Enter to use one. Red marks show the line to fix. Drag a bottom corner horizontally and vertically to resize.

Type your code here ↓Tap or click inside the box to start

✍️ Tap here to type

Dataset & schema

water_tests

IndustryDataset size

The tiny starter data. Bigger data scrolls.

Fields

test_id	river	ph
W1	Vaal	7
W2	Orange	6
W3	Vaal	8
W4	Tugela	5

Environment data only.

attempts: 0

▶ Output terminal

$ Press “Check my answer” — results appear here.

Your next steps

Each item turns green when your answer includes it.

2 left

Groups rows
Totals