Feddy Mwanjumwa

Exploring AI, machine learning, and data-driven solutions one project at a time.

Joined on May 26, 2026

Feddy Mwanjumwa

Sep 14

# SQL Window Functions: The Part That Took Me a While to Understand

#ai #sql #analytics #postgressql

3 min read

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Feddy Mwanjumwa

Sep 14

SQL Functions: Practical Examples I Actually Use

#ai #postgressql #programming #productivity

3 min read

Feddy Mwanjumwa

Sep 14

SQL Subqueries and CTEs

#ai #postgressql #analytics

3 min read

Feddy Mwanjumwa

Sep 14

SQL Joins Explained with Practical Examples

#ai #programming #sql #postgres

2 min read

Feddy Mwanjumwa

Sep 14

DDL & DML in SQL: Understanding the Basics.

#ai #sql #postgres #analytics

3 min read

Feddy Mwanjumwa

Sep 13

From Dirty Data to Business Insights: Building the Tembo Hotel Suites Database

#sql #ai #database #data

6 min read

Feddy Mwanjumwa

Sep 13

Understanding Schemas, Relationships, and Data Modeling in Power BI.

#powerbi #datamodelling #beginners #ai

4 min read

Feddy Mwanjumwa

Jul 28

Mastering SQL DDL, DML, and Data Querying by Building a School Database.

#ai #programming #productivity #sql

3 min read

Feddy Mwanjumwa

Jul 20

Connecting Power BI to PostgreSQL using Aiven Cloud to work on a project.

#postgres #sql #database #powerbi

4 min read

Feddy Mwanjumwa

Jun 6

How Excel is used in Real World Data Analysis- How deep, intresting and useful Excel is in the Tech space.

#ai #productivity #beginners

3 min read

Feddy Mwanjumwa

Jun 6

What i learnt about Excel after a week of data science classes- How deep, intresting and useful Excel is in the Tech space.

#ai #productivity #beginners

3 min read