Optimizing SQL Query with SUM and Case for Faster Performance in Big Datasets

Understanding Machine Performance: A Breakdown of Daily Upgrades and Downgrades

PostgreSQL Aggregation Techniques: Handling Distinct Ids with SUM()

Grouping Sum Results by Custom Date Range with PostgreSQL: Adjusting the Start Time of a Day Range for Financial Reporting

Filtering Results from Subquery: A Comprehensive Guide to Resolving Complex SQL Challenges

Get Rows from a Table That Match Exactly an Array of Values in PostgreSQL

Understanding Epoch Data in PostgreSQL: A Guide to Timestamps and Unix Time

Understanding seq_scan in PostgreSQL's pg_stat_user_tables: A Guide to Optimizing Performance

Finding Actors and Movies They Acted In Using SQL Subqueries and Self-Joins: A Comparative Analysis of UNION ALL and LEFT JOIN

Conditional Assignment in SQL: A Deep Dive into Window Functions vs Self-Join Techniques for Accurate Results