Unexpected `nil` values when using `pluck` with ActiveRecord in Rails 7.1
I'm a bit lost with I'm working on a personal project and I'm working with an scenario when trying to retrieve specific attributes from my database in a Rails 7.1 application using ActiveRecord. I have a `Product` model with attributes like `id`, `name`, and `price`. When I attempt to use the `pluck` method to get the names and prices of products, I sometimes receive unexpected `nil` values for the price attribute. Here's the code I'm using: ```ruby # Assuming I have a scope defined to get active products active_products = Product.where(active: true).pluck(:name, :price) ``` The idea is to get a list of active product names along with their prices. However, I noticed that for some products, the price is `nil`, even though they are active and should have a price set. I've checked the database, and these products do have valid prices stored. I've also tried using `select` instead of `pluck`, but the scenario continues: ```ruby active_products = Product.where(active: true).select(:name, :price) ``` In both cases, I receive some products with a `nil` value for the price. I've even verified that there are no callbacks or validations that might inadvertently set the price to `nil`. Additionally, I've checked the version of ActiveRecord I'm using: ```ruby # Gemfile gem 'activerecord', '7.1' ``` I suspect that there might be some data inconsistency or a deeper question related to how ActiveRecord handles `pluck` in conjunction with the database adapter (PostgreSQL in my case). Has anyone else faced this scenario? What could be causing these `nil` values, and how should I approach debugging this further? Has anyone else encountered this? I'm developing on Ubuntu 20.04 with Ruby.