Unioning and Grouping Rows with SQL Window Functions, Common Table Expressions, and Subqueries for Data Analysis

Resolving Issues with SQL Server's `ISDATE()` and `CAST` Functions for Accurate Date Conversion

Understanding Caller Names from Calls Data in SQL Server

Maximizing Employee Insights: Calculating Recent Start Dates with SQL Subqueries and Joins

Updating Item Amounts Based on Conditions with Stored Procedures in SQL Server

Ranking with Nulls based on Condition in SQL Server

Understanding Built-In Multiple Equality Functions in SQL: Alternatives to Checking Scalar Values Against Three or More Values

Understanding Azure SQL Concurrent Inserts: Solutions for Duplicate Records and Best Practices for Database Performance

Schema Change Detection for SQL Server: Identifying Unauthorized Table Renames

Optimizing Queries with Sum of Amount Grouped by Condition: A Deep Dive