Improve performance of ratings in JSON #954
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reid-rigo
commented
Feb 16, 2024
| class UpdateQueryUpdatedAtWithRatings < ActiveRecord::Migration[7.1] | ||
| def change | ||
| execute <<-SQL | ||
| UPDATE queries SET updated_at = GREATEST(updated_at, (SELECT MAX(updated_at) FROM ratings WHERE query_id = queries.id)) |
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Alternatively a new column could be added like ratings_updated_at
|
How about we go through this next Ruby Code Jam??? It hink it could be great! |
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Description
Case.includes(queries: :ratings)is a heavy operation for large cases.This optimizes JSON building with a method (
Case#doc_ratings_by_query) to load just the needed ratings columns in one shot.