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Walid Djebali

Just sharing my knowledge

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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 / Test Posted on: 22/08/2025

dbt: how to implement a metrics table to store test results

🎯 Why Create a Metrics Table for Test Results? By default, dbt test shows pass/fail […]

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Data / dbt / Enforcement Posted on: 20/08/2025

dbt: Enforcing Model Contracts in Incremental dbt Models Using Jinja Macros and Pre-Hooks

✅ Enforcing Model Contracts in Incremental dbt Models Using Jinja Macros and Pre-Hooks When using […]

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Data / Data Governance / dbt / debug / Metric Posted on: 20/08/2025

dbt: how to implement query progress callbacks in a dbt adapter

🎯 Goal When executing long-running SQL queries, especially on large warehouses (e.g. Databricks, Trino, Presto, […]

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Data / dbt / Optimisation Posted on: 19/08/2025

dbt: how to implement partition merging with metadata preservation in a large fact table snapshot in dbt

✅ The Problem: Large Snapshots with Too Many Partitions In large dbt projects using snapshots […]

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Data / dbt Posted on: 04/08/2025

dbt: Handling Evolving Source Schemas in dbt with Dynamic Column Selection

When working with external data sources (like APIs, third-party tables, or partner feeds), the schema […]

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Data / dbt Posted on: 01/08/202501/08/2025

dbt: Environment-Specific Contract Validation in dbt Using Custom Macros

Here’s a polished and professional English explanation with a concrete example, perfect for your website […]

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