shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ SQL 結果の結合。 SELECT P1.proc_id, P2.proc_id, P1.anest_name, P2.start_time, +1 FROM Procs AS P1, Procs AS P2 WHERE P1.anest_name = P2.anest_name AND NOT (P2.end_time <= P1.start_time OR P2.start_time >= P1.end_time) UNION SELECT P1.proc_id, P2.proc_id, P1.anest_name, P2.end_time, -1 AS event_type FROM Procs… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2014%2F03%2F29%2Funion" title="union - by shigemk2" 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 2014-03-29 01:51:01 rich https://www.shigemk2.com/entry/2014/03/29/union 1.0 100%