Understanding Table-Valued Parameters for Optional Parameters in T-SQL

Conditional Aggregation in SQL: A Powerful Tool for Data Transformation

SQL Query to Retrieve First and Last Dates in a Date Range from a Table

Running Second SELECT Statement Based on Result of First Statement Using CTEs

Selecting Records Based on Existence of Specific Values in a Table Using COALESCE, UNION ALL, and Subqueries With NOT EXISTS

Understanding SQL Server Date Formats and Querying Dates in a String Format

Understanding Table Joins in SQL Server: A Comprehensive Guide

Calculating Excess Employees in Date Ranges Using SQL and Data Analysis

Optimizing SQL Queries with Spatial Data Type: A Scalable Approach to Handling Overlapping Time Periods

Rolling Up Rows and Creating New Tables: A Step-by-Step Guide