Properties属性 Optional $all$all?: readonly any []
Optional $eq$eq?: TValue
Optional $exists$exists?: boolean
Optional $expr$expr?: Record < string , any >
Optional $geo$geo
Intersects
?: { $geometry
: Document } Optional $gt$gt?: TValue
Optional $gte$gte?: TValue
Optional $in$in?: readonly TValue []
Optional $json$json?: Record < string , any >
Optional $lt$lt?: TValue
Optional $lte$lte?: TValue
Optional $max$max?: number
Optional $mod$mod?: TValue extends number ? [ number , number ] : never
Optional $ne$ne?: TValue
Optional $nin$nin?: readonly TValue []
Optional $options$options?: TValue extends string ? string : never
Optional $rand$rand?: Record < string , never >
Optional $regex$regex
?: TValue extends string ? string | RegExp | BSONRegExp : never Optional $size$size?: TValue extends readonly any [] ? number : never
Optional $type$type
?: "string" | "symbol" | "undefined" | "object" | "double" | "array" | "binData" | "objectId" | "bool" | "date" | "null" | "regex" | "dbPointer" | "javascript" | "javascriptWithScope" | "int" | "timestamp" | "long" | "decimal" | "minKey" | "maxKey" | BSONType Optional __id__id?: undefined
Optional idid?: undefined
When如果为true,$existsmatches the documents that contain the field, including documents where the field value is null.true，则$exists与包含该字段的文档匹配，包括字段值为空的文档。