Tags / gaps-and-islands
Merging Overlapping Date Ranges in SQL Server 2014
Based on the provided specification, I will create a complete response that meets all the requirements. Here is the final answer:
Identifying Potential Entry and Exit Rows in SQL Server Using CTEs
Summing Over Rows Based on Column Value Using PostgreSQL Window Functions
SQL Ranking Based on Condition
Selecting Sportsmen in Oracle SQL: Approaches and Limitations for Consecutive Competitions