1st lesson free
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Jude
- Rate 308 GHS
- Response 1h
-
Students3
Number of students Jude has accompanied since arriving at Superprof
Number of students Jude has accompanied since arriving at Superprof
308 GHS/hr
Contact
1st lesson free
- SQL
Learn practical SQL with a Data Scientist — clear lessons on queries, joins, databases, window functions and real-world analytics
- SQL
Lesson location
Recommended
Jude is a respected member of our tutor community. He is highly recommended for his commitment and the quality of his lessons. An excellent choice to progress with confidence.
About Jude
My background includes software development, data analysis, process improvement and working with complex financial datasets.
I understand that joins, nested queries and window functions can initially feel abstract. I therefore teach SQL visually, showing what happens to the data at each stage of a query.
My approach is calm, structured and practical. You will not simply copy completed queries. You will learn how to plan them, build them in stages, test the output and identify mistakes.
These lessons are suitable for complete beginners, university students, aspiring analysts and professionals who need SQL for their current role.
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About the lesson
- Primary school
- Junior high school
- SHS 1
- +15
levels :
Primary school
Junior high school
SHS 1
SHS 2
SHS 3
BTS
Adult Education
Facultate (Licență)
Master's degree
Higher national diploma
Doctor of philosophy
MBA
Pre school
Beginner
Intermediate
Advanced
Professionel
Child
- English
All languages in which the lesson is available :
English
These lessons will help you learn SQL as a practical analytical skill rather than a list of commands to memorise.
We can begin with the fundamentals or work on more advanced analytical SQL, depending on your experience.
Topics can include:
Understanding tables, rows and columns
SELECT, FROM and WHERE
Sorting and limiting results
CASE statements
Aggregate functions
GROUP BY and HAVING
INNER, LEFT, RIGHT and FULL joins
Subqueries
Common table expressions
String and date functions
Window functions
Ranking and running totals
Data cleaning in SQL
Database design and normalisation
Query debugging and optimisation
SQL interview questions
Business-analysis case studies
Connecting SQL with Python or Power BI
I use diagrams to explain how queries transform data and how joins connect tables. You will practise writing queries yourself and learn a repeatable process for debugging them when the output is not what you expected.
Lessons can follow a structured curriculum or focus on a particular database, project, interview or workplace requirement.
My aim is to help you confidently translate a business question into a logical SQL query and check that the answer is accurate.
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Recommendations
Recommendations come from relatives, friends and acquaintances of the teacher
3
Jude is a brilliant tutor! Very professional and structured with a vast knowledge. Thank you very much :)
Solid course to learn the theory as well as the code. Best explains ever whenever questions related. He is knowing and very good at what he is doing here.
Jude takes his time to explain each topic and makes sure it is understood correctly before moving on, he ensures his students are fully satisfied with the lessons and has a lot of knowledge and has intricate lessons which shows his lessons are all pre planned
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Rates
Rate
- 308 GHS
Pack prices
- 5h: 1540 GHS
- 10h: 3080 GHS
free lessons
The first free lesson with Jude will allow you to get to know each other and clearly specify your needs for your next lessons.
- 1hr
online
- GHS308/h
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