Selecting Records Based on Existence of Specific Values in a Table Using COALESCE, UNION ALL, and Subqueries With NOT EXISTS

Identifying Records Repeating Within a Set Time Frame Since Their First Creation in SQL Using Self-Join Method

Designing Database Tables for Entities, Chapters, and Sections: A Comprehensive Guide to Relationships and Best Practices

Understanding String Truncation Errors When Inserting to a Temporary Table: Best Practices for Preventing Data Loss

How to Change the View of a List in SQL: Using String Splitting Functions and Dynamic Pivot Operations

Generating Serial Numbers in a Column with Reset Interval of 5 Records in T-SQL

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

Optimizing SQL Queries with Outer Apply: A Solution to Retrieve Recent Orders Alongside Customer Data

Retrieving Top 1 Row per Group: A Flexible Approach to Data Analysis

Joining Two Tables Based on Multiple Conditions and Priority in SQL: A Comprehensive Guide to Lateral Joins and Beyond