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Which is more popular?
Based on our record, LeetCode
seems to be a lot more popular than PostgreSQL Exercises.
While we know about 544 links to LeetCode,
we've tracked only 1 mention of PostgreSQL Exercises.
social mentions
544 vs 1
Online Education popularity
98% vs 2%
alternatives listed
240+ vs 9
Base details
Website, pricing, platforms and company facts side by side.
Comprehensive Problem Library LeetCode offers an extensive collection of problems ranging from easy to extremely difficult, covering a wide range of topics and difficulty levels.
Active Community LeetCode has a vibrant and active community of users who contribute solutions, discuss problems, and provide insights, which can be very helpful for learning and debugging.
Interview Preparation Many of the problems on LeetCode are modeled after questions that have been asked in technical interviews, making it a popular choice for job seekers to practice and prepare.
Company-specific Questions LeetCode provides a list of problems that are frequently asked by specific companies during interviews, which can help users focus their preparation.
Detailed Explanations Many problems come with detailed explanations and multiple approaches to solving them, helping users understand different methodologies and improve their coding skills.
Contest and Challenges LeetCode regularly hosts coding contests and challenges, which provide users with opportunities to compete against others and improve their skills under time constraints.
Possible disadvantages
Paid Subscription While LeetCode offers many resources for free, a premium subscription is required to access some advanced features, company-specific questions, additional test cases, and certain problem solutions.
Steep Learning Curve For beginners, the wide range of problem difficulties and the complexity of some problems can be intimidating and may require a significant amount of time and effort to get up to speed.
Limited Technology Coverage LeetCode mainly focuses on algorithm and data structure problems and doesn't cover other technical aspects like system design, databases, or front-end development as comprehensively.
Variable Quality of Community Solutions While the community is active, the quality of user-contributed solutions and explanations can vary significantly, and some may not follow best practices or be optimal.
Platform Performance Issues Some users report occasional performance issues such as slow loading times or glitches during peak usage times, which can be frustrating during practice or contests.
Overemphasis on Coding LeetCode's focus is predominantly on coding problems, which might lead some users to neglect other important skills required for technical interviews, such as communication and problem-solving in real-world scenarios.
Free and accessible PostgreSQL Exercises is completely free to use with no registration required, making it highly accessible to anyone who wants to practice SQL skills without any financial barrier.
Interactive practice environment The site provides a built-in SQL query editor where users can write and execute queries directly in the browser against a real database, getting immediate feedback on their results.
Progressive difficulty Exercises are well-organized into categories (basic, joins, aggregation, date, string, recursive) and progress from simple to complex, allowing learners to build their skills incrementally.
Realistic dataset The site uses a realistic country club management scenario with interconnected tables, giving learners practice with a coherent and relatable data model rather than abstract or disconnected examples.
Detailed solutions and explanations Each exercise comes with a detailed expected result set and a thorough explanation of the solution, helping learners understand not just what the answer is but why it works.
Possible disadvantages
Limited dataset scope The entire site relies on a single small dataset (a country club with members, facilities, and bookings), which limits exposure to diverse data modeling patterns and real-world complexity.
No user progress tracking Since there is no account system or registration, the site does not track user progress, making it difficult for learners to pick up where they left off or monitor their improvement over time.
PostgreSQL-specific syntax The exercises focus specifically on PostgreSQL syntax and features, which may not directly translate to other database systems like MySQL, SQL Server, or Oracle, potentially limiting transferability of learned skills.
Outdated design and interface The website has a dated visual design and user interface that lacks modern UX features such as syntax highlighting, auto-completion, or responsive mobile support, making it less pleasant to use compared to newer platforms.
Limited number of exercises The total number of exercises is relatively small compared to other competitive programming or SQL practice platforms, meaning advanced users may quickly exhaust the available problems.
Analysis
An editorial look at what each product does well and who it suits.
LeetCodePostgreSQL Exercises
Overall verdict
LeetCode is generally considered good, especially for individuals preparing for technical interviews in tech companies, as well as those aiming to improve their coding and problem-solving skills.
Why this product is good
LeetCode is widely regarded as a valuable resource for software engineers and developers looking to improve their coding skills, prepare for technical interviews, and solve complex algorithmic challenges. It offers a large collection of problems ranging from easy to hard, helping users to hone their problem-solving abilities. Additionally, it provides detailed solutions and discussions, allowing users to learn different approaches to tackle a problem.
Recommended for
Software engineers
Computer science students
Developers preparing for technical interviews
Individuals looking to improve their problem-solving skills
Coding enthusiasts
Overall verdict
PostgreSQL Exercises (pgexercises.com) is an excellent free resource for learning and practicing SQL through hands-on, interactive problems with immediate feedback, making it a valuable tool for anyone looking to sharpen their PostgreSQL skills.
Why this product is good
It offers a structured progression of exercises, from basic queries to advanced topics like aggregation, joins, string operations, recursive queries, and date manipulation
Each exercise runs against a realistic sample database (a fictional country club), giving practical context to the problems
It provides instant feedback and detailed explanations of solutions, reinforcing learning
The platform is completely free and requires no signup, so you can start practicing immediately
It focuses specifically on PostgreSQL, so you learn Postgres-specific syntax and features rather than generic SQL
Recommended for
Beginners who want to learn SQL fundamentals in a hands-on way
Developers and analysts who want to strengthen their PostgreSQL query skills
People preparing for technical interviews that involve SQL
Students supplementing coursework with practical exercises
Anyone transitioning to PostgreSQL from another database system
LeetCode is a renowned online platform offering a compendium of coding challenges that enable software developers to sharpen their programming prowess, facilitating their preparation for technical interviews. This...
In the quest for coding excellence, developers often seek platforms that not only challenge their skills but also make the learning process engaging and fun. While Leetcode has been a staple in the coding community...
Recommendations tracked on public social media and blogs since March 2021.
LeetCode544 mentionsPostgreSQL Exercises1 mention
AmaliTech Apprenticeship Program (AAP) (AAP)
General Coding Assessment (GCA): the harder of the two, but manageable with preparation. It's done on CodeSignal, either in person or online. To prepare, practice DSA questions on competitive programming sites like LeetCode, Codewars,...
- Source: dev.to
/
3 months ago
Category
Tool
URL
How I used it
General AI assistant
ChatGPT
Https://chatgpt.com
Breaking down concepts, simulating interviewers, reviewing answers
AI writing / reasoning
Claude
Https://claude.ai
Refining behavioral stories and...
- Source: dev.to
/
6 months ago
AVL Trees Explained: How Rotations Keep BST Operations O(log n)
Plain BST. Fine when input is random or the problem doesn't require worst-case guarantees. Tree problems on LeetCode typically assume balanced input and don't ask you to maintain balance yourself.
- Source: dev.to
/
6 months ago
Disclosure: I help build these simulators; they are part of 50+ free DevOps games and simulators. For more practice beyond them, SQLBolt and PostgreSQL Exercises are excellent and free, and SQL Murder Mystery is the most fun anyone has...
- Source: dev.to
/
2 months ago
Alternatives to LeetCode and PostgreSQL Exercises
When comparing LeetCode and PostgreSQL Exercises, you can also consider the following products.
HackerRank
Codewars
Project Euler
Exercism
interviewing.io
CodeForces
Codecademy
SQLBolt
SQLZOO
Select Star SQL
Oracle Live SQL
SQL Teaching
