mongodb compass filter multiple conditions

See Partial Indexes for more information. This operator uses the following basic syntax: db.m圜ollection. When evaluating the clauses in the or expression, MongoDB either performs a collection scan or, if all the clauses are supported by indexes, MongoDB performs. If specified, the index only references documents that match the filter expression.

The examples in the table assume the following conditions. The order of fields listed in a compound index. The following table presents the various SQL statements and the corresponding MongoDB statements. Query an Array with Compound Filter Conditions on the Array Elements. MongoDB also supports user-defined indexes on multiple fields, i.e. MongoDB Compass also provides and option to export queries in to programming language of. You can filter for documents which meet all the conditions in a query, this is covered in the lecture “Reading Documents: Scalar Fields”Ĭhapter 2 doesn’t cover filtering for documents which meet any of the conditions in a query, but there was a mention that this is covered later in the course.You can use the $ne operator (which stands for “not equal”) in MongoDB to query for documents where a field is not equal to a certain value. Specify Multiple Conditions for Array Elements. How MongoDB Compass can be used to write queries and filter results.

Edit: Just noticed this post is in the chapter 1 forum and the lecture I mention is in chapter 2. Write an application to Read multiple text files into single RDD using Spark. If multiple filters apply to a query, the filters must all specify the same type of projection or the query will fail. multiple instances: -dev, . If multiple documents satisfy the query, this method returns the first document according to the natural order which reflects the order of documents on the disk.

Mongodb compass filter multiple conditions