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SQL for Data Careers

SQL for Analysis & Portfolio Practice

Move beyond SQL syntax: define analytical populations, protect metric grain, diagnose JOIN errors, validate results, and explain business meaning.

6 substantial public lessons Application · judgment · explanation 20–40 minutes per topic

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Path overview

What you will practice

The free path demonstrates how an experienced analyst approaches SQL work through realistic business questions, substantial worked examples, validation checks, challenges, interview follow-ups, and portfolio connections. Paid modules remain focused on independent execution, datasets, progressive assignments, complete projects, assessment, and structured practice.

Structured topic sequence Realistic business context Progress you can return to

These lessons and practice materials are provided for educational and portfolio practice purposes only. They do not guarantee employment, interviews, job offers, salary outcomes, visa sponsorship, or any specific career result.

Course curriculum

Topics and practical lessons

Select any topic to open its dedicated details and practice page.

01

Available

SQL for Analysis: Application and Judgment

7 topics

01 SQL for Analytical Work: Questions, Tables, and GrainOpen topic details, explanation, and practical work View details 02 SELECT, WHERE, and ORDER BY for Business PopulationsOpen topic details, explanation, and practical work View details 03 Practice: Filter customer dataOpen topic details, explanation, and practical work View access 04 Aggregations and Business MetricsOpen topic details, explanation, and practical work View details 05 GROUP BY and HAVING Without Misleading the BusinessOpen topic details, explanation, and practical work View details 06 JOINs, Grain, and the 18% Revenue ProblemOpen topic details, explanation, and practical work View details 07 SQL Validation: Prove the Result Before You Present ItOpen topic details, explanation, and practical work View details

02

Paid

Filtering, Sorting, and Clean Query Writing

3 topics

01 Filtering records with multiple conditionsOpen topic details, explanation, and practical work View access 02 Sorting and limiting resultsOpen topic details, explanation, and practical work View access 03 Practice: Customer list preparationOpen topic details, explanation, and practical work View access

03

Paid

Aggregations and Business Metrics

3 topics

01 COUNT, SUM, AVG, MIN, MAXOpen topic details, explanation, and practical work View access 02 GROUP BY and HAVINGOpen topic details, explanation, and practical work View access 03 Practice: Monthly sales metricsOpen topic details, explanation, and practical work View access

04

Paid

SQL Joins for Real Analysis

3 topics

01 INNER JOIN and LEFT JOINOpen topic details, explanation, and practical work View access 02 Joining customers, orders, and productsOpen topic details, explanation, and practical work View access 03 Practice: Customer order analysisOpen topic details, explanation, and practical work View access

05

Paid

CTEs and Subqueries

3 topics

01 Using WITH clausesOpen topic details, explanation, and practical work View access 02 Breaking complex queries into stepsOpen topic details, explanation, and practical work View access 03 Practice: Above-average customer spendingOpen topic details, explanation, and practical work View access

06

Premium

Window Functions

3 topics

01 ROW_NUMBER, RANK, DENSE_RANKOpen topic details, explanation, and practical work View access 02 LAG and LEADOpen topic details, explanation, and practical work View access 03 Practice: Monthly revenue trendOpen topic details, explanation, and practical work View access

07

Premium

SQL Portfolio Project: E-Commerce Sales Analysis

4 topics

01 Project briefOpen topic details, explanation, and practical work View access 02 Data dictionaryOpen topic details, explanation, and practical work View access 03 SQL analysis tasksOpen topic details, explanation, and practical work View access 04 Final insights and README templateOpen topic details, explanation, and practical work View access

08

Premium

SQL Portfolio Project: Construction Analytics

4 topics

01 Construction project cost analysisOpen topic details, explanation, and practical work View access 02 Budget variance SQLOpen topic details, explanation, and practical work View access 03 Invoice and RFI analysisOpen topic details, explanation, and practical work View access 04 Portfolio explanation for business impactOpen topic details, explanation, and practical work View access

Public learning

See how an experienced analyst approaches the problem.

Substantial explanations, worked examples, validation checks, challenges, interview follow-ups, and portfolio connections.

Guided practice

Now perform the analytical work yourself.

Datasets, progressive assignments, answer comparison, project development, assessment, and progress tracking where available.

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