dayflower https://blog.hatena.ne.jp/dayflower/ daily dayflower https://dayflower.hatenablog.com/ perl db memo 'author' has-many 'books' 'book' has-many 'chapters' みたいなありがちな DB で 2 authors each author has 2 books each book has 3 chapters みたいなテーブルを作ってMulti-step-prefetch をためしてみたんですけど， my @authors = $db->resultset('author')->search( { }, { prefetch => { 'book' => 'chapter' }, }, )->all; foreach my $author (@aut… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdayflower.hatenablog.com%2Fentry%2F20061204%2F1165221662" title=" DBIC 0.7 で has-many な nested multi-step prefetch がうまくイカネ - daily dayflower" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2006-12-04 17:41:02 rich https://dayflower.hatenablog.com/entry/20061204/1165221662 1.0 100%