-
由 Ryuta Kamizono 提交于
`column_types` is empty except PostgreSQL adapter, and `attribute_types.each_key { |k| column_types.delete k }` is also empty even if PostgreSQL adapter almost all case, so that code is quite useless. This improves performance for `find_by_sql` to avoid that useless loop as much as possible. ```ruby ActiveRecord::Schema.define do create_table :active_storage_blobs do |t| t.string :key, null: false t.string :filename, null: false t.string :content_type t.text :metadata t.string :service_name, null: false t.bigint :byte_size, null: false t.string :checksum, null: false t.datetime :created_at, null: false t.index [ :key ], unique: true end end class ActiveStorageBlob < ActiveRecord::Base end Benchmark.ips do |x| x.report("find_by") { ActiveStorageBlob.find_by(id: 1) } end ``` Before: ``` Warming up -------------------------------------- find_by 1.256k i/100ms Calculating ------------------------------------- find_by 12.595k (± 3.4%) i/s - 64.056k in 5.091599s ``` After: ``` Warming up -------------------------------------- find_by 1.341k i/100ms Calculating ------------------------------------- find_by 13.170k (± 3.5%) i/s - 67.050k in 5.097439s ``` To avoid column types loop for PostgreSQL adapter, this skips returning additional column types if a column has already been type casted by pg decoders. Fortunately this fixes #36186 partly for common types.
71e45582