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SQL: Get records having min/max value per group
Here's one possible solution for a case when you need to fetch a set of records unique on one (or...
How to avoid N+1 query using SQL views (materialized) in Rails application
Consider the way to reduce the queries when calculating the average values and find the...
Custom ordering without custom SQL with Ruby on Rails 7
The problem It's a common case for Rails applications to have enum fields on a model like: class...