Grab your coffee. Here are this week’s highlights.

📅 Today’s Picks

Git Revert vs Reset – Choose the Right Undo Method

Problem

Have you made a commit mistake? Every data scientist faces this situation, but choosing the wrong recovery method can create bigger problems than the original error. The key is understanding when to use git revert versus git reset.

Solution

The decision depends on one critical question: “Has this commit been shared?”

If YES, use git revert which adds new commits that reverse previous changes while preserving history for audit trails.

If NO, use git reset which removes commits entirely and rewrites the timeline for clean, readable history.

Both are powerful tools when used correctly.

PySpark – Write Reusable SQL Queries Without Hardcoding Values

Problem

Hardcoding values into PySpark SQL queries leads to messy, repetitive code that’s hard to maintain.

Solution

Instead, define parameterized SQL templates in Apache Spark. These templates let you insert dynamic variables into your queries, making them reusable, testable, and easier to manage across your codebase.