How to Calculate End Date of Partition Rows Using Start Date of Following Partition in SQL Server

Conditional Aggregation to Filter NULL Results

How to Get First Record (Earliest VALIDFROM) and Last Record (Latest VALIDTO) for a Specific Staff ID in SQL

Optimizing Cross Applies in SQL Server: A Step-by-Step Guide to Avoiding Unexpected Results

SQL Server Date Range Analysis: Querying Records 60 Days Prior to Today

How to Use SQL LEAD and LAG Window Functions to Solve Gaps-and-Islands Problems

Why Using xp_cmdshell in Stored Procedures Slows Down Execution Times

Extracting Records from SQL Server Tables Based on Time Values

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

Understanding the Limitations of varchar(max)