https://github.com/tanushreesarkar/hackerrank-sql-certificate-test-solution
🎓 Verified and optimized solutions to the HackerRank SQL Certification Test — covering Basic, Intermediate, and Advanced levels. Ideal for certification preparation, SQL interview practice, and MySQL mastery.
https://github.com/tanushreesarkar/hackerrank-sql-certificate-test-solution
github-config hackerrank-sql-certificate-github hackerrank-sql-certification-solutions hackerrank-sql-skill-certification-answers hackerrank-sql-test-github hackkerrank-solutions mysql-database sql sql-basic-intermediate-advanced-hackerrank sql-certificate-test-hackerrank
Last synced: 11 months ago
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🎓 Verified and optimized solutions to the HackerRank SQL Certification Test — covering Basic, Intermediate, and Advanced levels. Ideal for certification preparation, SQL interview practice, and MySQL mastery.
- Host: GitHub
- URL: https://github.com/tanushreesarkar/hackerrank-sql-certificate-test-solution
- Owner: TanushreeSarkar
- License: mit
- Created: 2025-07-21T11:12:03.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2025-07-21T16:24:00.000Z (11 months ago)
- Last Synced: 2025-07-21T18:37:32.967Z (11 months ago)
- Topics: github-config, hackerrank-sql-certificate-github, hackerrank-sql-certification-solutions, hackerrank-sql-skill-certification-answers, hackerrank-sql-test-github, hackkerrank-solutions, mysql-database, sql, sql-basic-intermediate-advanced-hackerrank, sql-certificate-test-hackerrank
- Homepage:
- Size: 18.6 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
---
# 🌟 HackerRank SQL Certification Test Solutions 🌟
> *“I know how tough it can be to prepare for certifications — that’s why I built this repo to help you crush the HackerRank SQL tests with confidence.”*
## 🎉 Welcome, SQL Warriors!
This is your **go-to toolkit** to master the **HackerRank SQL Skill Certifications** — whether you're just starting with basics or aiming for advanced mastery.
I've been in your shoes — late-night practice sessions, tricky test cases, and those silent "why won't this pass?" moments. This repository is here to **save you time, confusion, and frustration.**
---
## 🔥 What You'll Get
✅ **Verified, Optimized SQL Solutions**
✅ **Complete Coverage** of:
- 📘 Basic Certification
- 📗 Intermediate Certification
- 📙 Advanced Certification
✅ **Built in MySQL**, tested to match HackerRank’s strict grading system
✅ **Clean code**, ready to run, learn from, and tweak for practice
---
## 🧩 Why This Repository Exists
✨ **Comprehensive** – No level left behind
🚀 **Optimized Solutions** – Efficient, industry-standard queries
📂 **Organized** – Clear file names, sorted by certification level
💬 **Approachable** – Made with empathy for learners like you
💼 **Interview-Ready** – Not just for HackerRank, but real-life job prep
---
## 🗂️ Folder Structure – Neat, Clean & Intuitive
```
HackerRank-SQL-Certification-Solutions/
├── 📘 Basic/
│ ├── select-top-performers.sql
│ ├── filter-country.sql
│ └── ...
├── 📗 Intermediate/
│ ├── groupwise-avg-orders.sql
│ ├── monthly-spending-trends.sql
│ └── ...
└── 📙 Advanced/
├── recursive-leaderboard.sql
├── correlated-market-analysis.sql
└── ...
```
> 🔎 *Every `.sql` file is named after its corresponding problem. No confusion. No guesswork.*
---
## 🚀 How to Use This Like a Pro
1. **📥 Clone the repo**
```bash
git clone https://github.com/your-username/HackerRank-SQL-Certification-Solutions.git
```
2. **📁 Navigate by level**
Choose `Basic`, `Intermediate`, or `Advanced` depending on your certification target.
3. **🧪 Run and Learn**
- Copy the SQL code
- Paste it in your MySQL environment or HackerRank SQL editor
- Execute and study the logic behind each query
4. **📚 Practice & Modify**
Use this as your learning base — experiment, tweak queries, and grow your SQL superpowers.
---
## 💡 Tips for Certification Success
- ✅ **Don’t just copy — *understand*.**
- ✅ **Use MySQL locally** (e.g., Workbench, db-fiddle.com) to play with queries.
- ✅ **Watch out for constraints** like `NULL` values, duplicates, and data types.
- ✅ **Test edge cases** — HackerRank loves tricky inputs.
- ✅ **Practice regularly** — Skill builds with consistency.
---
## 🤝 Want to Contribute?
Got a cleaner query? Discovered a new question? Add it in! 🤗
Let’s build this together for every SQL learner out there.
```bash
# Steps:
1. Fork this repo 🍴
2. Add or improve SQL files ✍️
3. Open a pull request 🔄
```
> You’ll be helping hundreds of learners and job-seekers just like yourself 🌍
---
## 📣 Show Your Support!
If this helped you:
- 🌟 Star the repo
- 🍴 Fork it
- 💬 Share it
- 📢 Spread the word using `#HackerRankSQL`
> Someone else might be looking for exactly this help — be that reason 💛
---
## 📬 Questions or Suggestions?
Open an [Issue](https://github.com/TanushreeSarkar/HackerRank-SQL-Certification-Solutions/issues) or drop feedback!
This is an open learning space — your voice matters 🫶
---
## 📄 License
Licensed under the [MIT License](LICENSE)
Free to use, share, and modify — just give credit where it’s due ✨
---
## 🎯 Final Thoughts
Whether you're:
- 💻 Preparing for the HackerRank SQL Certification
- 📋 Brushing up for interviews
- 🎓 Learning SQL from scratch
**This repo was made for *you*.**
> *“Keep learning. Keep building. You've got this!”*
> — *From one SQL learner to another 💛*
---
**#SQL #HackerRank #Certification #MySQL #InterviewPrep**