Using Arrays for Conditional Aggregation in BigQuery: A Pivot Table Solution

Using Window Functions to Get the Highest Metric for Each Group

Resolving MySQL Error: Using Non-Aggregated Columns in GROUP BY Clause

Get Top 1 Row of Each Group: A Comprehensive Guide to Aggregate Functions and Data Normalization

Retrieving the Last Production Quantity from a MySQL Query: Two Solutions with Correlated Subqueries and row_number()

Understanding How to Use PostgreSQL's SELECT Statement for Efficient Querying

Using Window Functions to Select the Latest Date for Each ID Video Type

Calculating the Average of Last 3 Values for Each User in SQL