ActiveRecord: опасная магия. Часть 2
В первой части статьи мы обсуждали, как обманчивая простота ActiveRecord приводит к проблеме N+1 запросов, и я предложила решение. После публикации…
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includes vs joins vs preload vs eager_load in Rails
These four all deal with associations, and they're easy to mix up. The way I keep them straight is to ask two questions about each: what SQL does it…
Why flag_shih_tzu is changing its default SQL for bit flags
flag_shih_tzu stores many boolean attributes in one integer column. Each boolean gets one bit 〰️ well that used to be true 〰️ v1.0.0 supports multi-…