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PySpark

PySpark Built-in Functions

These functions are commonly used with groupBy() , agg() , or select() to compute things like sum, average, max, min, count, etc. PySpark functions come fr…

Aggregate apache spark for beginners big data tutorial
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Mar 19, 2026 2 min read
SQL

SQL Server User-Defined Functions (UDF)

SQL Server ke saare User-Defined Functions — Scalar, Inline TVF, MSTVF — ko ek jagah samjho. Real examples, performance tips, aur interview questions ke saath.

SQL Server UDF User Defined Function SQL Scalar Function SQL Server
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Apr 29, 2026 18 min read
Machine learning

Categorical Data Handling in Machine Learning (Pandas + Sklearn) – Complete Practical Guide

Learn categorical data encoding end-to-end — Label, Ordinal, One-Hot, Target, Binary, Frequency encoding with Pandas & Sklearn. Beginner to advanced.

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Apr 24, 2026 28 min read
Machine learning

Logistic Regression — The Superhero of Classification | ML Series Part 3

Logistic Regression explained completely — sigmoid function, evaluation metrics, class imbalance, threshold tuning, and real-world projects in Python. Beginn...

logistic regression logistic regression python classification machine learning
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Apr 14, 2026 21 min read
SQL

SQL Server Deadlock & Performance Monitoring Made Easy

Introduction In SQL Server, performance issues are very common. Sometimes queries run slow, sometimes users get stuck, and sometimes the system becomes unres...

SQLServer DBA PerformanceTuning
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Mar 19, 2026 52 min read
Python

The Ultimate Python Basics Guide: From Zero to Confident Developer

...scratch — variables, data types, operators, strings, loops, functions, and more. A complete beginner-to-advanced guide with real-wo...

Python basics Python tutorial Python for beginners
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Mar 19, 2026 41 min read