Convert string to number mongodb
Docs Home → MongoDB Manual Show $toInt Converts
a value to an integer. If the value cannot be converted to an integer,
The The
TipSee also:The following table lists the input types that can be converted to an integer:
The following table lists some conversion to integer examples:
Create a collection
The following aggregation operation:
The operation returns the following documents:
NoteIf the conversion operation
encounters an error, the aggregation operation stops and throws an error. To override this behavior, use How do I change the datatype of a column in MongoDB?You can change the data type of a field by using the data type selectors on the right of the field in the Atlas Cloud Cluster as well as MongoDB Compass . If you want to update it using Mongo shell or any specific drivers of MongoDB then you can refer to the $convert operator.
What is $Set in MongoDB?$set outputs documents that contain all existing fields from the input documents and newly added fields. The $set stage is an alias for $addFields. Both stages are equivalent to a $project stage that explicitly specifies all existing fields in the input documents and adds the new fields.
What is $project in MongoDB?Definition. $project. Passes along the documents with the requested fields to the next stage in the pipeline. The specified fields can be existing fields from the input documents or newly computed fields.
What are the data types in MongoDB?The following are some of the most often used data types in MongoDB.. String. One of the most basic and widely used data types is the string. ... . Integer. Numeric values are stored using the integer data type. ... . Double. ... . Boolean. ... . Array. ... . Object. ... . Date. ... . Timestamp.. |