Tags / greatest-n-per-group
Optimizing Uniqueness in PostgreSQL: A Scalable Approach for Efficient Querying
Querying Each Student's 3rd Best Assignment Mark in Each Subject Using Window Functions
SELECT DISTINCT ON (user_id, activity_type_id, EXTRACT(year FROM start_date_local))
Finding Top 2 Customers by Maximum Amount of Transaction in Oracle DB: A Comprehensive Guide
Filtering SQL Server Data According to Its Max Value
Understanding SQL Server's SELECT DISTINCT Query Conundrum: A Guide to Efficient Duplicate Row Elimination