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3 sql teachers in Ginebra

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3 sql teachers in Ginebra

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(8 reviews)
Oussama - Soest, NetherlandsRecently active221 CNY
221 CNYEmergency Project Help: Debug, Fix & Deploy Your Web Application Fast
Trusted teacher: Your project is broken? Deadline approaching? Can't deploy? I help developers and students fix bugs, optimize code, and deploy applications to production. I Specialize In: Emergency Debugging: Find and fix errors fast (frontend crashes, backend timeouts, database issues) Deployment Rescue: Get your app live when nothing works (AWS, Vercel, Netlify) Performance Optimization: Speed up slow applications (database queries, API responses, bundle size) CI/CD Setup: Automate your deployment pipeline (GitHub Actions, testing, monitoring) Common Problems I Solve: ❌ "My app works locally but crashes in production" ❌ "Database queries are too slow" ❌ "Authentication isn't working" ❌ "Can't deploy to AWS / Vercel" ❌ "Getting weird errors I don't understand" ❌ "Payment integration (Stripe) not working" Technologies I Work With: Frontend: React, Next.js, TypeScript, Vue, Angular Backend: Node.js, NestJS, Express, Python (Django, Flask) Databases: PostgreSQL, MySQL, MongoDB, Redis Cloud: AWS (EC2, RDS, S3), Vercel, Netlify, Render DevOps: Docker, CI/CD, GitHub Actions, Nginx Perfect For: Students: Fix your project before the deadline Junior Developers: Debug production issues you can't solve alone Freelancers: Get unstuck on client projects fast Startups: Fix and deploy your MVP without hiring a full-time engineer How It Works: Live Debugging Session: We fix it together via screen share Code Review: I show you how to prevent the issue in the future Documentation: You get a summary of what was fixed and why Average Resolution Time: Simple bugs: 1-2 hours Deployment issues: 2-3 hours Complex debugging: 3-5 hours Urgent projects accepted (same-day availability for emergencies).
Database · Web development · Computer programming
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(2 reviews)
Brahim - Berrechid, MoroccoRecently active247 CNY
247 CNYIntroduction to Relational Database and SQL Language by practise
Trusted teacher: Module 1: SQL Overview Outlining SQL as the cornerstone of database activity Applying the ANSI/ISO standards Describing the fundamental building blocks: tables, columns, primary keys, and foreign keys Module 2: Building the Database Schema - Creating tables and columns Building tables with CREATE TABLE Modifying table structure with ALTER TABLE Adding columns to an existing table Removing tables with DROP TABLE - Protecting data integrity with constraints Guaranteeing uniqueness with primary key constraints Enforcing integrity with foreign key constraints Imposing business rules with check constraints - Improving performance with indexes Expediting data retrieval with indexes Recommending guidelines for index creation Module 3: Manipulating Data - Modifying table contents Adding table rows with INSERT Changing row content with UPDATE Removing rows with DELETE - Applying transactions Controlling transactions with COMMIT and ROLLBACK Deploying BEGIN TRANSACTION in SQL Server Module 4: Working with the SELECT Statement - Writing Single Table queries Retrieving data with SELECT Specifying column expressions Sorting the result with ORDER BY Handling NULL values in expressions - Restricting rows with the WHERE filter Testing for equality or inequality Applying wildcard characters Avoiding NULL value pitfalls Module 5: Querying Multiple Tables - Applying the ANSI/ISO standard join syntax Matching related rows with INNER JOIN Including nonmatched rows with OUTER JOIN Creating a Cartesian product with CROSS JOIN - Combining results with set operators Stacking results with UNION Identifying matching rows with INTERSECT Utilizing EXCEPT to find nonmatching rows Module 6: Employing Functions in Data Retrieval - Processing data with row functions Conditional formatting with the CASE expression Utilizing the CASE expression to simulate IF tests Dealing with NULL values - Performing analysis with aggregate functions Summarizing data using SUM, AVG and COUNT Finding the highest/lowest values with MAX and MIN Defining the summary level with GROUP BY Applying filter conditions with HAVING Module 7: Constructing Nested Queries - Applying subqueries in filter conditions Creating correlated vs. noncorrelated subqueries Testing the existence of rows - Including subqueries in expressions Placing subqueries in the column list Creating complex expressions containing subqueries Handling subqueries that return no rows Module 8: Developing In-Line and Stored Views - Breaking down complex problems Selecting data from a query result set Using subqueries in the FROM clause - Creating views in a database Building reusable code Creating updateable vs. non-updateable views
Mysql · Oracle database · Microsoft sql server
Ahmed - EgyptRecently active94 CNY
94 CNYIGCSE ICT & CS, Programming, AI Courses, Data Structure & Algorithms for College Students
Trusted teacher: Hello, My name is Ahmed & I'm working as a TA in Ain Shams University. I am available for assignments, Homeworks, exams, quizzes, projects, and labs. Expert Programming & Web Development Tutor | Python, Java, C#, C++, Frontend, Backend, Databases, AI & Data Science 💻 Programming Languages: ✔ Programming: C, C++, Java, Python, PHP, JavaScript, HTML ✔ Mathematics: Linear Algebra, Calculus, Discrete Math, Probability, Optimization ✔ Object-Oriented Programming (OOP): Encapsulation, Polymorphism, Inheritance, Abstraction, Design Patterns ✔ Machine Learning: Neural Networks, Regression, Classification, Clustering, Reinforcement Learning ✔ Data Structures & Algorithms (DSA): Trees, Graphs, Linked Lists, Stacks, Queues, Priority Queues, Hash Tables, Tries, Heaps, Disjoint Sets, Sorting Algorithms (Merge Sort, Quick Sort, Heap Sort, etc.), Searching Algorithms (Binary Search, Linear Search), Dynamic Programming, Greedy Algorithms, Divide & Conquer, Backtracking, Topological Sort, Graph Traversals (BFS, DFS), Minimum Spanning Tree (Prim’s, Kruskal’s), Shortest Path Algorithms (Dijkstra’s, Bellman-Ford, Floyd-Warshall), String Algorithms (KMP, Rabin-Karp, Z-Algorithm), and more! ✔ Assignments, Homework, Labs, Projects, Exams, or Quizzes 🌐 Web Development: Frontend – HTML, CSS, JavaScript, React, Laravel Backend – .NET, PHP, Flask, Django 🗄️ Databases: SQL, MongoDB 🧠 AI & Data Science: Python for Data Science, Machine Learning, Pandas, NumPy, Data Visualization ✅ What You’ll Get: Personalized one-on-one sessions Clear explanations with real-world examples Hands-on coding practice Help with assignments, projects, and interview prep A focus on understanding, not memorizing No matter your level, I make learning tech engaging and effective. Let’s turn your goals into achievements—one line of code at a time!
Computer programming · Python · C - c++
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Our students from Ginebra evaluate their de SQL teacher.

To ensure the quality of our de SQL teachers, we ask our students from Ginebra to review them.
Only reviews of students are published and they are guaranteed by Apprentus. Rated 4.9 out of 5 based on 71 reviews.

Python (Software Engineers and Data Science): From Basics to Mastery (Brussels)
Mohamed
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I've been studying with Mohamed for several months now, and I can confidently say he is one of the smartest and most effective teachers I've ever worked with. He not only has a deep understanding of Python and Data Science, but he truly knows how to teach. Mohamed has a rare combination of strong technical expertise and outstanding teaching skills. He can explain complex topics in a simple and clear way, and he always chooses examples and exercises that really help you grasp the material. What I value most is his focus on practical application: we don’t get stuck in theory — we move straight to solving tasks that are relevant to real-world work. This makes each lesson extremely useful and efficient 👌🏼
Review by VIKTORIIA
Scientific subjects (Math, Physics, Chemistry) for students of the French mission/for middle and high school students (Casablanca)
Amin
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So far, I've been getting help with my IGCSE 's in Math and Computer Science with Amin. In most of the lessons I've been with him, he's been really helpful and responsible. He has also been very patient. He helps me become more confident in my answers and makes the lessons pretty fun! After my lessons with him, I do understand my topics more and am able to go to my classes in school without feeling lost. If you're ever struggling with Physics or Programming, I'm sure he can help you too :)
Review by MANIJ
Professional Full-Stack Web Development: React, Node.js, AWS & Production Deployment (Les Bons Villers)
Oussama
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rating green star
I have no prior experience in this area and I took lessons with Ousamma. He has enough patience and a knack in guiding you step by step through the lessons and exercises in a very simple way to understand them well. He is an invested teacher that is kind and polite. He will help you to develop your abilities and to feel confident in order to achieve your goals. I warmly recommend him and extend my gratitude his great support throughout my learning journey.
Review by BEN

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