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Walid Djebali

Just sharing my knowledge

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AI Posted on: 20/11/2025

Chain-of-thought prompting

Chain-of-thought prompting means asking a large language model to show its reasoning step by step […]

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AI Posted on: 19/11/2025

Does a Downloadable Local LLM Contain All of the Knowledge on the Internet?

(Full Clear Explanation for Beginners) The short answer: NO — a downloadable LLM does not […]

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AI Posted on: 19/11/2025

Is Saying ‘Launching a Model’ the Same as ‘Launching an LLM’?

Yes — in about 90% of technical conversations, people use both expressions to mean the […]

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Data / dbt Posted on: 28/08/2025

dbt: Configurations Hiérarchiques dbt : Gestion Prédictible des Schémas

🎯 Le Problème avec les Sous-répertoires Imbriqués Structure de Projet Typique 🚨 Défis Sans Configuration […]

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Data / dbt Posted on: 28/08/2025

dbt: Schema Configuration: Understanding ‘schema: null’

🎯 What is schema: null? When you set schema: null in a dbt model configuration, […]

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Data / Data Governance / dbt Posted on: 28/08/2025

dbt: Data Masking in dbt: Reusable Macros Best Practices

🎯 What is Data Masking? Data masking is the process of obfuscating sensitive data while […]

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Data / dbt / Optimisation Posted on: 28/08/2025

dbt: Metrics Filter Dimensions: Practical Guide

🎯 The Problem In dbt’s semantic layer, you have complex metrics with multiple filter conditions: […]

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Data / dbt Posted on: 27/08/2025

dbt: Macro vs Valeurs en Dur : Pourquoi la Macro Gagne

🤔 La Question Légitime Pourquoi faire une macro quand on peut écrire directement : Au […]

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Data / dbt Posted on: 27/08/2025

dbt: Hybrid Slowly Changing Dimension (SCD) Type1 & Type 2

🧠 What is a Hybrid SCD? A Hybrid SCD combines: ✅ Why use Hybrid SCD? […]

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Data / dbt / Monitoring / Optimisation Posted on: 27/08/2025

dbt: Optimizing dbt Parallel Execution: A Strategic Approach to Thread Management

In the world of modern data engineering, the ability to process large volumes of data […]

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