Optimizing SQL Queries with Group By and Window Functions

Understanding the Mysterious Case of SQL ORDER BY DESC in Oracle Databases

Grouping Rows in SQL Based on Column Sum Value Without Exceeding a Specified Limit

Calculating Average Duration in Oracle Subqueries: A Step-by-Step Guide

Understanding Oracle Date Formats: Mastering Timestamps for Efficient Data Management

Conditional Aggregation for Separate Columns in Oracle Using Conditional Aggregation

How to Iterate Input Variables Using PL/SQL: A Deep Dive into Substitution Variables and Loop Limits

Calculating the First 80% of Categories in Oracle: A Step-by-Step Guide to Running Totals and Handling the Edge Case

Concatenating Column Values in Oracle SQL: Best Practices and Techniques

Assigning Unique Row Numbers to Each Group in SQL Queries Using Window Functions