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Showing posts from 2025

Find the Most Frequent Value in SQL: A Comprehensive Guide

Finding the most frequent value in a database can help businesses make informed decisions. For exam…

byknowstar •January 09, 2025

How to Validate Credit Card Numbers Using SQL and the Luhn Algorithm?

Ever wondered how online systems instantly verify your credit card number? They use an algorithm ca…

byknowstar •January 07, 2025

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