Unpivoting Data in Postgres: A Step-by-Step Guide to Getting Multiple Values for One Row

Using Row Numbers to Simplify Data Manipulation and Analysis in T-SQL

Using Recursive Queries to Enumerate Weeks and Count Occurrences in SQL

Comparing Dates with IF-THEN-ELSE Inside a PostgreSQL Procedure: Best Practices and Examples

Filtering a Pandas DataFrame on Dates and Wrong Format: A Step-by-Step Guide

Calculating Date Differences in SQL Server: A Comprehensive Guide

Converting Unix Timestamps to SQL DateTime with Milliseconds in VB.NET

Preserving Date Format When Working with SQL Databases in R

Counting Rows for Every Day Between Two Date Columns in SQL Server

Counting Days an Activity Entry is Active within a Particular Month using Proc SQL and Date Ranges