SQL course for beginners and students: queries and databases - Ganshoren

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SQL course for beginners and students: queries and databases

From 26 £ /h

I work as a data consultant and hold a master's degree in Data Science and Statistics from UCLouvain. I use SQL and databases in a professional context.

I offer SQL courses for students, beginners and people wishing to learn how to query and manipulate data in a structured way.

The lessons are tailored to your level and your goal. We can work on, among other things:

* understand how a relational database works;
* Write your first SQL queries;
* SELECT, WHERE, ORDER BY and DISTINCT;
* GROUP BY, HAVING and aggregation functions;
* understand and use the different types of JOIN;
* subqueries and CTE;
* SQL functions and window functions;
* Data manipulation and analysis using SQL;
* understanding and optimization of queries;
* solving exercises and preparing for exams;
* Debugging and correcting SQL queries.

I favor a practical approach: we start with exercises or concrete datasets and gradually build the queries. The goal is to understand the logic behind SQL rather than memorizing commands.

I can also assist you with an exercise, project or student work by explaining the process, the questions and the errors encountered, without doing the work for you.

Extra information

You can send me the exercises, database schema, queries, or the topic you wish to work on in advance. This will allow me to prepare a session tailored to your level and objective.

Location

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At student's location :

Around Molenbeek-Saint-Jean, Belgium

At teacher's location :

Clos Joseph Hendrickx, Ganshoren, Belgique

Online from Belgium

About Me

I am a data consultant with a degree in Business Engineering and a master’s degree in Data Science and Statistics from UCLouvain.

I enjoy teaching because I like making subjects that may initially seem complex easier to understand. My goal is to help each student understand the underlying reasoning, build confidence and gradually become independent.

I have taught university-level practical sessions in probability and mathematics to first-year bachelor’s students and provided tutoring through Schola ULB for three years. I support secondary-school pupils, university students and adults who want to develop practical skills.

I offer lessons in mathematics, statistics, probability, Excel, office software, Python, SQL, programming and data analysis.

My teaching method is based on clear explanations, structured progression and exercises adapted to each student’s level and objectives. I generally begin by identifying the difficulties or specific needs before working through them step by step until the student can apply the method independently.

I provide a supportive, serious and practical learning environment, with a clear objective for every lesson.

Education

Master’s degree in Data Science and Statistics — UCLouvain

Degree in Business Engineering — UCLouvain

Academic background focused on mathematics, statistics, data analysis, programming, economics and quantitative finance.

Experience / Qualifications

Data Consultant

Professional experience in structuring, analysing and using data, as well as working with tools such as Excel, Python and SQL.

Instructor for university-level practical sessions in probability and mathematics for first-year bachelor’s students.

Three years of tutoring experience with pupils and university students through Schola ULB.

Experience supporting learners in mathematics, statistics, study methodology, programming, office software and data analysis.

Age

Teenagers (13-17 years old)

Adults (18-64 years old)

Student level

Beginner

Intermediate

Advanced

Duration

60 minutes

90 minutes

120 minutes

The class is taught in

French

English

Skills

Sql

Availability of a typical week

(GMT -04:00)

New York

At teacher's location and via webcam

At student's home

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

Python and data analysis courses for beginners and students

26 £ /h

I work as a data consultant and hold a master's degree in Data Science and Statistics from UCLouvain. I use Python and data manipulation and analysis tools daily in a professional context.

I offer Python and data analysis courses for students, beginners and people wishing to develop practical skills in programming and data.

The lessons are tailored to your level and your goal. We can work on, among other things:

* the basics of Python and programming logic;
* variables, conditions, loops and functions;
* Data manipulation with Python and pandas;
* data cleaning and transformation;
* data exploration and visualization;
* applied statistics;
* solving practical exercises and projects;
* Understanding and debugging your code.

I prefer a practical approach: we start with a concrete problem or dataset, gradually build the solution, and analyze the errors encountered together.

The goal is to understand what you are doing rather than simply reproducing code, in order to gradually become self-reliant.

I can also support a project or student work by explaining the approach, the code and the methods used, without doing the work for you.

Mathematics, statistics and probability courses for high school and university students

26 £ /h

I have a degree in Business Engineering and a master's degree in Data Science and Statistics from UCLouvain. I led university practical sessions in probability and mathematics for first-year bachelor's students and provided tutoring for three years through Schola ULB.

I offer private tutoring in mathematics, statistics and probability to secondary school students and university students.

The sessions are tailored to each student's level, difficulties, and objectives. We begin by identifying the concepts that pose a problem, then we review the basics before applying them in progressive exercises.

I can assist you with, among other things:

- review the basics in mathematics, algebra and calculation;
- to better understand the theory;
- develop your mathematical reasoning;
- solving exercises step by step;
- to study statistics and probabilities;
- prepare for a test, an exam or a second session;
- structure your revisions;
- to gain confidence and autonomy.

My method is based on clear explanations, targeted exercises, and a structured progression. The goal is not only to pass an exam, but also to understand the reasoning behind it and develop a reusable method for tackling new problems.

Mark

I am a British citizen who has been living in Belgium for over ten years. I offer English classes to students of all ages. I am available at different times of the day, not just evenings so please ask about specific availability.

Being a mathematics graduate I may also be able to help with secondary school mathematics, particularly at the S6/S7 level or first year university.

Finally I have long career experience in I.T. and am particularly knowledgeable in Excel, including VBA programming and in databases and SQL querying.

Sanyam

This course is for university students who would like to master data essentials and database querying. We learn normalisation, ER diagrams, DDL, DML as part of this course. Immerse yourself in practicing logics via different exercises. The couse will be tailored per your specific needs.

Mohamed

Dive into the world of SQL databases with this comprehensive course designed for learners of all levels. Whether you are new to databases or seeking to expand your expertise to advanced concepts like distributed systems, this course has you covered.

What You can Learn:
- Fundamentals of relational databases and SQL syntax.
- Designing robust databases using normalization and entity relationships.
- Writing complex queries, joins, and subqueries.
- Database optimization techniques for performance tuning.
- Implementing stored procedures, triggers, and views.
- Managing transactions and ensuring data integrity.
- Understanding and working with distributed database systems like Distributed PostgreSQL

Mark

Sanyam

Mohamed

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