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A tool and examples to help you implement the first or last per record in rails with one query

bhserna.com · published 31 May 2022

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https://github.com/bhserna/first_or_last_per_user
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/00_min_max.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/01_distinct_on.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/02_distinct_on_arel.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/03_lateral_join.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/04_window_function.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/05_memory_benchmark.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/06_ips_benchmark.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/07_has_one.rb
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https://github.com/bhserna/first_or_last_per_user/blob/main/examples/08_preload_object.rb
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