Stay sharp in SQL with 15 minutes a day
Three real-world SQL problems every day. No grinding, no overload.
Just consistent practice designed for working data professionals.
Trusted by data professionals at top companies
SQL skills decay without practice
You know SQL. You've written thousands of queries. But when that interview question comes up—or when you need a complex window function on a deadline—something feels off.
Most professionals face the same problem: there's no time to grind through 500 practice problems. And when you do find time, the skills you built disappear within weeks.
The issue isn't learning SQL. It's maintaining it.
Practice, not grinding
We're not another LeetCode. We're the daily routine that keeps your SQL sharp.
Traditional platforms
SQLDaily
How it works
A simple daily flow designed for busy professionals
Start your day
Open SQLDaily with your morning coffee. Three new questions are waiting—one easy, one medium, one advanced.
Solve real problems
Work through business scenarios: revenue analysis, cohort calculations, funnel conversions. The SQL you actually use at work.
Build your streak
Track your consistency over time. No leaderboards, no competition—just you and your daily practice habit.
See the workflow in action
From notification to solution in 15 minutes.
Daily SQL for
Built for working professionals
Every feature designed to maximize learning in minimal time
New questions every day
Fresh problems daily. No recycled content—each morning brings new challenges tailored to real work scenarios.
Three difficulty levels
Easy to warm up, medium to practice, advanced to push your limits. Cover the full spectrum every day.
Real-world SQL patterns
Window functions, CTEs, complex aggregations, date calculations. The patterns you need in production.
15 minutes or less
Designed for busy schedules. Get in, practice, get out. No time wasted on irrelevant problems.
Streak & mastery tracking
Build consistency with daily streaks. Track your progress across SQL concepts without competitive pressure.
Business-focused problems
Analyze revenue, calculate retention, build funnels. Problems that mirror real data team work.
Is this for you?
We're opinionated about who we build for
SQLDaily is for you if you're...
- Data Analysts who write SQL daily
- Data Engineers building pipelines
- Analytics Engineers working with dbt
- Backend Engineers with database work
- Professionals preparing for interviews
- Anyone who knows SQL but wants to stay sharp
This might not be for you if you're...
- Complete SQL beginners
- People looking for certification prep
- Those who prefer competitive leaderboards
- Anyone wanting to binge-learn in one weekend
Join the early access
We're rolling out access gradually to ensure quality. Join now to lock in early adopter pricing when we launch.
- 3 new SQL questions every day
- Easy, Medium, and Advanced difficulties
- Streak and progress tracking
- Real-world business problems
- Early adopter pricing locked in
Common questions
Everything you need to know
Yes! We offer three difficulty levels: Basic, Intermediate, and Advanced. Beginners can start with Basic questions to build confidence before moving up.
Just 15 minutes. Our problems are designed to be solved quickly so you can build a consistent habit without burning out.
Both. The problems are based on real-world business scenarios (like revenue analysis, retention, etc.) which are exactly what top tech companies ask in interviews.
We support standard PostgreSQL syntax, which is the most widely used and transferable dialect in the industry.
Currently, we release exactly 3 new questions daily to prevent 'binge-and-quit' cycles/decision fatigue. The goal is long-term consistency.
Your streak will reset, but your mastery progress and solved history remain safe. Consistency is key!