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    Szymon
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    from147.15CNY/ h

    College SQL Exam Preparation - Learn Everything about PostgreSQL "SELECT" statements!

    Are you preparing for your college SQL exams and want to excel in database querying? Join my SQL Exam Preparation course, where you’ll get expert guidance from an experienced tutor with a strong background in databases. (mainly PostgreSQL and mySQL) With 2 years of SQL experience, top scores in exams at KdG University, and over a year of tutoring, I’ll help you master SELECT statements and beyond.

    What you’ll learn:

    - Basics of SQL: tables, columns, rows
    - Writing SELECT queries
    - Filtering data using WHERE, LIKE, and logical operators
    - Using ORDER BY and LIMIT for sorting and limiting results
    - Aggregate functions: COUNT, SUM, AVG, MIN, MAX
    - GROUP BY and HAVING clauses for data aggregation
    - Joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN
    - Subqueries and nested SELECT statements

    Who is this for? This course is ideal for anyone looking to strengthen their SQL skills, whether you're a beginner or preparing for college-level exams. We’ll cover core SELECT query concepts, ensuring you have the confidence to work with real-world data and ace your tests.

    Looking for something more advanced? Check out my other course on CREATE and INSERT statements.

    Extra information

    Bring your own laptop with PostgreSQL installed!

    Location

    At student's location: Around Antwerp, Belgium
    Online via webcam

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    General info

    Age:
    Teenagers (13-17 years old)
    Adults (18-64 years old)
    Student level:
    Beginner
    Intermediate
    Duration:
    60 minutes
    120 minutes
    The class is taught in:English, Polish

    About Me

    Hi! I’m a skilled and dedicated developer with expertise in Java, Spring, JavaScript, Node.js/Express.js. I'm consistently recognized as a "programming wizard" by my friends, colleagues, and teachers. With many years of programming experience and a strong background in backend/bot development, I specialize in building robust applications and coding every silly idea that comes to my mind. I have also worked with frontend technologies like React, html+css, JavaFX, and Next.js

    About a year ago, I have discovered my love for spreading my knowledge onto others. Since then I have been preparing students for exams, and teaching anything from beginner to advanced topics in multiple programming and database query languages.

    Education

    I have been taking every single class and course about computers and programming ever since I started elementary school. I have finished high school with an Honors Diploma and multiple recognitions in IT fields: robotics, coding, software engineering. After that, I started studying at KdG University, where I am still studying (currently year 2).

    Experience / Qualifications

    I have written tens if not hundreds of programming projects both by myself and with teams of other developers. I've been programming in Java, Python, and JavaScript almost daily for the past 3 years. I have scored an average of 19.5/20 on my 4 University programming exams.
    Ready to dive into the world of JavaScript? Whether you're starting from scratch or want to level up your skills, this course will guide you through the core concepts of Vanilla JavaScript—the foundation of web development. By the end, you’ll be able to build interactive web pages, manipulate the DOM, and even create cool animations and games using HTML Canvas. What you’ll learn: - JavaScript fundamentals: variables, data types, functions, loops, and conditionals - DOM manipulation: interacting with and modifying HTML elements - Event handling: adding interactivity to your websites with events like clicks and keypresses - JSON and data fetching: working with APIs to load dynamic content - Asynchronous JavaScript: promises, async/await - Best practices and clean coding Bonuses: - HTML Canvas: Create graphics, animations, and games! - Local Storage: Save data in the browser for a persistent user experience - JavaScript ES6+ Features: Stay up-to-date with the latest syntax and capabilities Who is this for? This course is perfect for beginners who want to master the fundamentals of JavaScript, as well as developers looking to solidify their understanding of Vanilla JavaScript before moving into frameworks. We’ll focus on practical, hands-on learning to ensure you walk away with skills you can immediately apply.
    Are you preparing for your college Java exams and want to ace them? Join my College Java Exam Preparation course to receive expert guidance from a seasoned Java programmer. With 3+ years of experience in Java, consistent top scores in programming exams at KdG University (average of 19.5/20), and over a year of tutoring experience, I’m here to help you master everything from foundational concepts to advanced topics. What you’ll learn: - Java basics: variables, data types, operators - Control flow: loops, if/else, switch + break/continue - Arrays and Strings - Object-oriented programming (OOP): classes, methods, static keyword, constructors(and overloading), - Advanced OOP: inheritance, polymorphism, encapsulation, abstraction, interfaces - Collections, exceptions, file handling, and I/O Who is this for? This course is perfect for students at any level of Java proficiency—whether you're just starting or looking to fine-tune your advanced skills before exams. We'll focus on core exam topics and work through real-world Java problems to make sure you feel confident and well-prepared. Need something more advanced? Check out my other courses on JDBC (with SQL), JavaFX, Spring basics, and Spring Boot
    Dive into the world of web development with my comprehensive HTML course, designed for beginners who want to build stunning, functional websites from the ground up. Whether you’re curious about how websites work or want to create your own, this course will take you step-by-step through the essentials of HTML and beyond, giving you the skills to develop real-world projects confidently. What You'll Learn: - HTML Basics: Learn the building blocks of the web by mastering tags, elements, attributes, and how to structure content. - Interactive Forms: Create dynamic forms for login pages, surveys, and more, and handle user input effectively. - Adding Media: Discover how to embed images, videos, and other multimedia to make your websites more engaging. - Linking and Navigation: Build a fully connected website using hyperlinks, menus, and navigation best practices. - Introduction to CSS: Apply basic styles to your HTML content, learning how to change fonts, colors, layouts, and more. - Responsive Web Design: Ensure your websites look great on mobile, tablet, and desktop using modern techniques like Bootstrap. - Semantic HTML: Understand the importance of clean, readable code with semantic tags that improve your website’s accessibility. Course Features: - Hands-on exercises for every topic to reinforce learning. - Personal feedback and guidance on your projects. - Practical examples and projects to help you apply your skills in real-world scenarios. - Learn at your own pace, with flexible lessons tailored to your skill level. Who is this course for? This course is perfect for beginners with little to no coding experience. By the end, you’ll have a strong foundation in HTML and basic web development, empowering you to continue learning CSS, JavaScript, or dive into more advanced web development.

    Ask a question

    Send a message explaining your needs and Szymon will reply soon:
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    Availability of a typical week

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    from 147.15 CNYOnline via webcam
    from 173.11 CNYAt student's home

    Good-fit Instructor Guarantee


    If you are not satisfied after your first lesson, Apprentus will find you another instructor or will refund your first lesson.

    Online reputation

    • Instructor since October 2024
    • 1 repeat student
    • Phone number verified
    • Google connected
    • Linkedin connected

    Availability of a typical week

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    from 147.15 CNYOnline via webcam
    from 173.11 CNYAt student's home

    Good-fit Instructor Guarantee


    If you are not satisfied after your first lesson, Apprentus will find you another instructor or will refund your first lesson.

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