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substring() in PySpark
📌 What is substring() ? The substring() function in PySpark is used to extract a portion of a string from a column in a DataFrame. It is part of the PySpa…
The Complete NumPy Guide for Python Developers — Part 1: Foundations & Arrays
Master NumPy from scratch — arrays, data types, creation methods, indexing, slicing, and broadcasting explained with real-world examples. Perfect for beginne...
Understanding Accuracy and Evaluation Metrics in Machine Learning
Learn accuracy and ML evaluation metrics with simple Hinglish explanations, formulas, examples, and real-world use cases for better model performance.
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...
Dynamic Linked Server Management in SQL Server
Introduction In SQL Server, sometimes we need to connect with another database server. This is done using a Linked Server . But manually creating and deletin...
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...