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Linking Data in PostgreSQL Without Explicit Keys: A Practical Guide
Databases often evolve in unpredictable ways. Tables that were initially designed to operate independently might later need to be connected.
SQL: Get records having min/max value per group
The solution doesn't require any changes to the DB scheme (denormalization or creation of views) and can be performed in the scope of a single SQL query.
How to avoid N+1 query using SQL views (materialized) in Rails application
In the first part, we considered the solution with extracting logic to the separate class and implementing the Facade pattern.
Custom ordering without custom SQL with Ruby on Rails 7
Ordering records by an enum in Rails 7 without hand-written SQL: in_order_of puts the rows in the sequence you name.
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