Answer by Greg for Show SQL ActiveRecord queries in rails console using SemanticLogger gem

It depends on the semantic_logger configuration but you should try

SemanticLogger.default_level = :trace

(you can run it in the console, and if works - add it to your initializers/development.rb or local.rb)

In my case I'd now see the output, but as a JSON:

> 2020-02-26 11:26:24.094050 D [2220:11016600] (220.0ms) ActiveRecord -- { :sql => "SELECT COUNT(*) FROM \"things\"" }

So I need to add in my local.rb (not sure how this can be done dynamically in the console)

Rails.application.configure do  config.rails_semantic_logger.semantic = falseend

to see

2020-02-26 11:31:34.972958 D [6280:14940580] ActiveRecord::Base --    (198.6ms)  SELECT COUNT(*) FROM "things"