> For the complete documentation index, see [llms.txt](https://docs.mongoing.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mongoing.com/can-kao/yun-suan-fu.md).

# 运算符

- [查询与映射运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators.md)
- [比较查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators.md)
- [$eq](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/eq.md)
- [$gt](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/gt.md)
- [$gte](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/gte.md)
- [$in](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/in.md)
- [$lt](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/lt.md)
- [$lte](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/lte.md)
- [$ne](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/ne.md)
- [$nin](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comparison-query-operators/nin.md)
- [逻辑查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/logical-query-operators.md)
- [$and](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/logical-query-operators/and.md)
- [$not](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/logical-query-operators/not.md)
- [$nor](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/logical-query-operators/nor.md)
- [$or](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/logical-query-operators/or.md)
- [元素查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/element-query-operators.md)
- [评估查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/evaluation-query-operators.md)
- [地理空间查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/geospatial-query-operators.md)
- [数组查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/array-query-operators.md)
- [按位查询运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/bitwise-query-operators.md)
- [$comment](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/comment.md)
- [映射运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-and-projection-operators/ying-she-yun-suan-fu.md)
- [更新运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/update-operators.md)
- [字段更新运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/update-operators/field-update-operators.md)
- [数组更新运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/update-operators/array-update-operators.md)
- [按位更新运算符](https://docs.mongoing.com/can-kao/yun-suan-fu/update-operators/bitwise-update-operator.md)
- [聚合管道阶段](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-stages.md)
- [聚合管道操作符](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators.md)
- [$abs (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/abs-aggregation.md)
- [$acos (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/acos-aggregation.md)
- [$acosh (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/acosh-aggregation.md)
- [$add (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/add-aggregation.md)
- [$addToSet (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/addtoset-aggregation.md)
- [$allElementsTrue (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/allelementstrue-aggregation.md)
- [$and (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/and-aggregation.md)
- [$anyElementTrue (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/anyelementtrue-aggregation.md)
- [$arrayElemAt (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/arrayelemat-aggregation.md)
- [$arrayToObject (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/arraytoobject-aggregation.md)
- [$asin (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/asin-aggregation.md)
- [$asinh (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/asinh-aggregation.md)
- [$atan (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/atan-aggregation.md)
- [$atan2 (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/atan2-aggregation.md)
- [$atanh (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/atanh-aggregation.md)
- [$avg (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/avg-aggregation.md)
- [$ceil (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/ceil-aggregation.md)
- [$cmp (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/cmp-aggregation.md)
- [$concat (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/concat-aggregation.md)
- [$concatArrays (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/concatarrays-aggregation.md)
- [$cond (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/cond-aggregation.md)
- [$convert (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/convert-aggregation.md)
- [$cos (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/cos-aggregation.md)
- [$dateFromParts (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/datefromparts-aggregation.md)
- [$dateToParts (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/datetoparts-aggregation.md)
- [$dateFromString (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/datefromstring-aggregation.md)
- [$literal (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/literal-aggregation.md)
- [查询修饰符](https://docs.mongoing.com/can-kao/yun-suan-fu/query-modifiers.md)