- Reference >
- Operators >
- Query and Projection Operators >
- Evaluation Query Operators
Evaluation Query Operators¶
Evaluation operators return data based on evaluations of either individual fields or the entire collection’s documents.
Note
For details on a specific operator, including syntax and examples, click on the link to the operator’s reference page.
Name | Description |
---|---|
$expr |
Allows use of aggregation expressions within the query language. |
$jsonSchema |
Validate documents against the given JSON Schema. |
$mod |
Performs a modulo operation on the value of a field and selects documents with a specified result. |
$regex |
Selects documents where values match a specified regular expression. |
$text |
Performs text search. |
$where |
Matches documents that satisfy a JavaScript expression. |