Gaps and Islands Problem in Oracle 12c: Finding Periods from Timestamps in Ordered Tables

Oracle SQL: Search for Multiple Words in a String and Return All Matched Words in a Concatenation Way

Understanding Oracle's Limitations with RANK and ROW_NUMBER

Extracting the Last String after Right-Most Space in SQL

ORA-00979 Not a GROUP BY Expression Error in Oracle: Causes, Solutions, and Best Practices for Resolving Ambiguity in Group By Clauses

Using DENSE_RANK() to Select Top Groups by Category Without Numerical Metrics in Oracle

Handling Missing Data in SQL Joins: A Comprehensive Guide