Tools / Databases, search and streaming
SQL
Querying, joining and aggregating tables. The most useful language you'll learn in a weekend.
About 10 hours of study. You can start it straight away.
Where to learn it
Read
The PostgreSQL tutorial
The PostgreSQL Global Development Group
Part I, Tutorial
Section not checked yet
Watch
Practise
Other options
- Kaggle Learn (practise)
Intro to SQL, then Advanced SQL - SQL 50 (practise)
SQL 50, every section - PostgreSQL Exercises (practise)
Every section, in order
Wrong chapter, dead link, or know something better? Tell us on GitHub.
Your route to SQL
Nothing has to come first, so the route is just this one stop. Tick it off when you’re done.
1 stop to go, about 10 hours of study.
Open a stop to see the book, the video course and the practice for it. Tick its circle when you've finished.
- 10 h
Data. Ready to start.
That's the whole route to SQL.
Which roles ask for it
- Software engineer (SDE) to get hired
- Backend engineer to get hired
- Full-stack engineer to get hired
- QA engineer / SDET to get hired
- Data analyst to get hired
- Data engineer to get hired
- Machine learning engineer to get hired
- Risk analyst to get hired
- Financial analyst in the first year
- Economist / economic research analyst in the first year
- Statistician / biostatistician to get hired
- Salesforce administrator / developer to get hired
- ServiceNow developer to get hired
- BI developer to get hired
- Analytics engineer to get hired
- Product analyst to get hired
- Database administrator to get hired
- Solutions architect to get hired
- Product manager to get hired
- Business analyst to get hired
- GATE computer science to get hired
- Data scientist to get hired
- Application support engineer to get hired
- GATE data science and AI to get hired
- UGC NET computer science to get hired
What it needs and what it leads to: SQL on the map.