How to Combine Rows from Two Tables into One Using SQL JOINs and Aggregate Functions with Conditional Statements

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

Joining Tables Based on the Closest Date Value: A Comprehensive Guide

Finding Top 2 Customers by Maximum Amount of Transaction in Oracle DB: A Comprehensive Guide

Enforcing Business Rules on Many-to-Many Relationships: A Safe and Transparent Approach Using Materialized Views

Creating Dynamic Table Column Calculation in PL/SQL with Oracle's MODEL Clause

How to Use Subqueries to Solve the "Query Within a Query" Problem in SQL

Dynamic Trading Time Extraction Using a Custom Function in Oracle SQL

Optimizing Database Queries for Reduced Execution Time: A Comprehensive Guide

Resolving ORA-01427: Alternative Approaches for Data Insertion in Oracle