Jessica Aki

Learning databases, data engineering, and building in public

Abuja, FCT, Nigeria Joined on Jan 6, 2026

Education

B. Eng Computer Engineering at Covenant University

Pronouns

She/Her

Jessica Aki

Jan 23

Old Oracle Joins vs ANSI JOINs: Why I Chose One and Stuck With It

#oracle #sql #database #beginners

2 min read

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Jessica Aki

Jan 22

How SQL JOINs Finally Clicked for Me (and How They Can for You Too)

#database #sql #postgres #beginners

4 min read

Jessica Aki

Jan 21

SQL Dates Finally Made Sense: NOW, AGE, EXTRACT, and Why Time Is Weird

#sql #database #postgres #beginners

3 min read

Jessica Aki

Jan 20

SQL Nulls Finally Made Sense: COALESCE, NULLIF, and Safer Calculations

#sql #postgres #database #beginners

3 min read

Jessica Aki

Jan 19

Querying & Filtering in Oracle Databases: What Actually Clicked for Me As a Beginner

#oracle #sql #database #beginners

4 min read

Jessica Aki

Jan 19

Table Design: Database Fundamentals to Know as a Beginner

#sql #database #beginners #learning

4 min read

Jessica Aki

Jan 17

Columns & Data Types in Oracle: What Actually Stuck on Day 2 (As a Beginner)

#oracle #sql #beginners #database

3 min read

Jessica Aki

Jan 16

Learning Databases Beyond SQL: My First Day with Oracle Tables

#sql #oracle #beginners #database

3 min read

Jessica Aki

Jan 13

SQL Aggregations Finally Made Sense: GROUP BY, HAVING, MIN, MAX, AVG

#database #postgres #beginners #sql

3 min read

Jessica Aki

Jan 9

I Built a PostgreSQL User Analytics System — Here’s What I Learned About Real SQL

#postgres #beginners #database #sql

3 min read

Jessica Aki

Jan 9

SQL Pattern Matching As A Beginner (LIKE, ILIKE, IN, BETWEEN)

#sql #postgres #beginners #database

3 min read

Jessica Aki

Jan 9

Learning SQL Subqueries as a Beginner: What Made Sense and What Didn’t

#sql #database #beginners #postgres

3 min read

Jessica Aki

Jan 7

Practicing SQL with Real Data: INSERT, WHERE, ORDER BY, and GROUP BY

#database #sql #postgres #beginners

3 min read

Jessica Aki

Jan 7

Learning SQL in Practice: LeetCode Challenges and Setting Up PostgreSQL

#sql #postgres #database #beginners

3 min read

Jessica Aki

Jan 6

Databases & SQL Basics As A Beginner: A Practical Introduction

#database #sql #beginners #postgressql

3 min read

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Jessica Aki

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Old Oracle Joins vs ANSI JOINs: Why I Chose One and Stuck With It

Want to connect with Jessica Aki?

How SQL JOINs Finally Clicked for Me (and How They Can for You Too)

SQL Dates Finally Made Sense: NOW, AGE, EXTRACT, and Why Time Is Weird

SQL Nulls Finally Made Sense: COALESCE, NULLIF, and Safer Calculations

Querying & Filtering in Oracle Databases: What Actually Clicked for Me As a Beginner

Table Design: Database Fundamentals to Know as a Beginner

Columns & Data Types in Oracle: What Actually Stuck on Day 2 (As a Beginner)

Learning Databases Beyond SQL: My First Day with Oracle Tables

SQL Aggregations Finally Made Sense: GROUP BY, HAVING, MIN, MAX, AVG

I Built a PostgreSQL User Analytics System — Here’s What I Learned About Real SQL

SQL Pattern Matching As A Beginner (LIKE, ILIKE, IN, BETWEEN)

Learning SQL Subqueries as a Beginner: What Made Sense and What Didn’t

Practicing SQL with Real Data: INSERT, WHERE, ORDER BY, and GROUP BY

Learning SQL in Practice: LeetCode Challenges and Setting Up PostgreSQL

Databases & SQL Basics As A Beginner: A Practical Introduction