How does the query planner choose an index? What are the different stages in an `explain()` output related to indexing?

Jan 26, 2024 ... MongoDB · Multiple data sources, databases, schemas and replication ... To create a spatial index on a column in MySQL, add an Index with ... Jun 10, 2019 ... In this article, we'll provide instructions for creating indexes for a MongoDB collection using Python. Jan 28, 2024 ... Multikey indexes in MongoDB provide a powerful mechanism for efficiently querying arrays and nested documents within a collection. MongoDB Atlas comes with a full-text search engine that can be used to search for documents in a collection. Atlas Search is powered by Apache Lucene. Aug 26, 2021 ... If you don't manually create a unique index in MongoDB (using a tool like Compass), there's nothing stopping you from inserting duplicate ... Dec 15, 2015 ... 1 Answer 1 ... The first you need to do is calculate how many documents the index will delete if you change the 60 days into 30. That is a simple ... Sep 28, 2021 ... In this tutorial, you'll learn what indexes are, how to create them, and how to check how they're used when the database performs queries. Creates one index to a database deployment in a rolling manner. You can't create a rolling index on an M0 free cluster or M2/M5 shared cluster. May 26, 2019 ... Indexes store references to fields in either ascending (1) or descending (-1) sort order. For single-field indexes, the sort order of keys doesn ... dropIndex is a Change Type in the Liquibase Open Source and Liquibase Pro extensions for MongoDB that drops an index for a collection by its keys.