Returning Comma-Separated Email Addresses in SQL Server Using STUFF and XML PATH

Using Conditional Aggregation to Sum Amounts from Raw Data with Specific Labels

Converting ISO 8601 UTC Time to Datetime Format in SQL Server 2016: Best Practices and Workarounds

T-SQL Aggregation of Overlapping Date Times From Large View: A Scalable Solution

How Databases Handle Conditional Logic in Sorting Queries

Optimizing Indexing Strategies for High-Density Tables: A Guide to PK and Columnstore Indexes