Removing Adjacent Duplicates from Sequential Data

Understanding SQL Joins and Aggregate Functions: How to Avoid Common Errors When Using Grouping and Aggregate Functions with Subqueries.

Update Duplicate Data in Databases Using Self-Join and MERGE Statement

SQL Grouping Two Separate Items in a Column Together in the Same Row: A Conditional Logic Approach

How to Create Range Columns from a Single Column Using SQL

Creating User-Defined Functions (UDFs) in MySQL: Understanding Variables and Syntax Errors

Identifying Unique Values in Tables with Multiple Similar Rows Using SQL

Finding Records Present in Multiple Groups Across Different Database Schemes

SQL Pivot Table: Replacing Special Characters in a String with Multiple Methods

Creating an SQL View with Conditional Aggregation: Combining Rows into Additional Columns Using Pivot