ohbarye https://blog.hatena.ne.jp/ohbarye/ valid,invalid https://ohbarye.hatenablog.jp/ 2015夏 MongoDB MongoDB # 索引 # 追加 > db.users.ensureIndex({ score: 1 }) { "createdCollectionAutomatically" : false, "numIndexesBefore" : 1, "numIndexesAfter" : 2, "ok" : 1 } # 一覧 > db.users.getIndexes() [ { "v" : 1, "key" : { "_id" : 1 }, "name" : "_id_", "ns" : "mydb.users" }, { "v" : 1, "key" : { "score" : 1 }, "n… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fohbarye.hatenablog.jp%2Fentry%2F2015%2F09%2F03%2F092230" title="9/2学んだこと / MongoDB@dotinstall - valid,invalid" 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 2015-09-02 23:30:00 rich https://ohbarye.hatenablog.jp/entry/2015/09/03/092230 1.0 100%