Postgres Left Nested Join with Having Count Condition Items

Understanding JDBC Joining Multiple Child Tables to a Parent Table

Generating Counts of Open Tickets over Time in PostgreSQL

Understanding When a LEFT JOIN Becomes an INNER Join Due to Silently Converted Filters

Joining Two Databases with Different Query Structures: A Solution Using Temporary Views and CTEs

Optimizing SQL Queries for Complex Data Models Using Conditional Aggregation

Mastering LEFT OUTER JOIN: A Comprehensive Guide for Accurate Query Results

Using Windowed Functions in SQL Queries: A Solution to Avoid Tripled Data

Understanding Left Joins with Default Relations: How to Implement Them Effectively