BG1 https://blog.hatena.ne.jp/BG1/ 車輪のx発明 ~B.G's Blog~ https://bg1.hatenablog.com/ PostgreSQL INTERVALは、時間間隔を表す型。https://www.postgresql.jp/docs/9.4/datatype-datetime.html postgresdb1=# CREATE TABLE events ( id INT, name VARCHAR(100), duration INTERVAL ); CREATE TABLE postgresdb1=# INSERT INTO events (id, name, duration) VALUES (1, '映画上映', INTERVAL '2 hours'); INSERT 0 1 postgresdb1=# INSERT … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbg1.hatenablog.com%2Fentry%2F2025%2F08%2F08%2F210000" title="INTERVAL - 車輪のx発明 ~B.G&#39;s Blog~" 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 2025-08-08 21:00:00 rich https://bg1.hatenablog.com/entry/2025/08/08/210000 1.0 100%