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27 lines
532 B
Ruby
27 lines
532 B
Ruby
require 'benchmark/ips'
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require File.expand_path("../../config/environment", __FILE__)
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conn = ActiveRecord::Base.connection.raw_connection
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Benchmark.ips do |b|
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b.report("simple") do
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User.first.name
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end
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b.report("simple with select") do
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User.select("name").first.name
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end
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b.report("pluck with first") do
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User.pluck(:name).first
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end
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b.report("pluck with limit") do
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User.limit(1).pluck(:name).first
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end
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b.report("raw") do
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conn.exec("SELECT name FROM users LIMIT 1").getvalue(0, 0)
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end
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end
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