Optimizing FIFO Matching of Two Datasets in T-SQL: Converting from "While" Loop to Set-Based Logic or CTE

Optimizing CTE SQL Queries for Performance and Efficiency

Calculating DATEDIFF on "Non-Valid" Columns in SQL Server 2008: A Step-by-Step Solution

Optimizing Performance on JSON Data: A PostgreSQL Query Review

Duplicating Rows in a Dataset Based on Multiple Conditions Using Recursive CTEs