MongoDB Query Language (MQL) Evaluation Query Operators
Evaluation query operators are used to evaluate expressions and conditions within your queries. They help you filter documents based on specific criteria, allowing for more precise and dynamic querying capabilities.
$expr
The $expr operator allows the use of aggregation expressions within the query language, enabling complex field comparisons and calculations.
$jsonSchema
The $jsonSchema operator validates documents against a JSON Schema definition for data validation and structure enforcement. Discover supported features and limitations.
$mod
The $mod operator performs a modulo operation on the value of a field and selects documents with a specified result.
$regex
The $regex operator provides regular expression capabilities for pattern matching in queries, allowing flexible string matching and searching.
$text
The $text operator performs text search on the content of indexed string fields, enabling full-text search capabilities.