Inconsistent results when using `pluck` with ActiveRecord in Rails 7.1 under certain conditions
I'm upgrading from an older version and I'm having a hard time understanding Could someone explain I'm relatively new to this, so bear with me... I'm experiencing inconsistent results when using the `pluck` method with ActiveRecord in my Rails 7.1 application. The scenario arises when I try to pluck multiple columns from a related table using a join. I have the following query: ```ruby User.joins(:posts).pluck('users.id', 'posts.title') ``` While most of the time this works perfectly, I occasionally get unexpected results where the array returned is empty, despite there being users with posts in the database. When I check the SQL generated by ActiveRecord, it looks fine: ```sql SELECT users.id, posts.title FROM users INNER JOIN posts ON users.id = posts.user_id ``` I’ve also tried running the raw SQL directly in my database console, and it returns the expected rows. I suspect it might have something to do with the data being loaded in memory or possibly the state of the database connection. For context, I'm using PostgreSQL and the database has around 10,000 users and 50,000 posts. I have also used `select` instead of `pluck`, and the behavior seems to mirror that of `pluck`. I’ve checked for any callbacks or before filters that might be impacting the query, but everything seems normal. I’m wondering if anyone has encountered similar issues with `pluck` in Rails 7.1 or if there are known edge cases I might be missing. Any insights would be appreciated! I'm working in a CentOS environment. What would be the recommended way to handle this? Any advice would be much appreciated. I'm on Debian using the latest version of Ruby. Has anyone dealt with something similar?