Скачать или смотреть 🔤 Master SQL String Functions — Extract Initials & Format Text in PostgreSQL

In this tutorial, I walk you through two powerful SQL string operations used daily in real data analytics and reporting:

✔️ What You’ll Learn

How to extract initials like "A.B." using UPPER() + SUBSTRING()

How to slice characters from text fields (e.g., characters 3–6 of a department name)

Why string manipulation is essential for dashboards, formatting, and clean datasets

Real business examples using employee and department tables

These SQL tricks help you format names, clean data, build clean reports, and improve your analytics workflow.

If you're learning SQL for business, analytics, HR systems, CRMs, dashboards — this tutorial is a must-watch.

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