Optimizing PostgreSQL Queries: A More Efficient Approach for Retrieving Customer Book Purchase Data

Updating a Database Table to Preserve Duplicate Values While Inserting New Data

SELECT DISTINCT ON (user_id, activity_type_id, EXTRACT(year FROM start_date_local))

Mastering SQL Check if Exists and Insert: A Single-Query Solution for Efficient Data Management

Implementing Data Refreshing in Shiny Apps Connected to PostgreSQL Databases

Understanding SQL Inequality Conditions

Counting Days Between Dates Based on Multiple Conditions in PostgreSQL

Understanding UNION Queries and Querying Result Sets: Advanced Techniques for SQL Development

Optimizing Views for Querying Ledger-like Tables in PostgreSQL: A Simplified Approach Using Functions

Handling NULL Values in PostgreSQL Arrays and Aggregations: Best Practices for Efficient Querying