Conditional Aggregation to Filter NULL Results

Query String Split: A Deep Dive into SQL Server's STRING_SPLIT Function

Optimizing T-SQL Queries for Large-Scale Applications: A Step-by-Step Guide to Query Performance Issues and Solutions

Understanding the Challenge of Inserting a Value from a Select Statement for a Non-Identity Column: Solutions for SQL Server and Oracle Databases

Understanding the T-SQL MERGE Statement with Condition: What is Not Matched?

Creating Time Windows with Alternating Values in T-SQL

Joining Tables When Certain Conditions Must Be Met: A SQL Server Example

Using Case Expressions to Simplify Aggregate Functions in SQL

Using the CASE Expression in SQL to Count Values

Limiting Records from a SQL View: A Guide to OFFSET FETCH Clauses