September 2018
Beginner to intermediate
192 pages
4h 37m
English
Content preview from MongoDB 4 Quick Start Guide
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Aggregation pipeline expression operators
The following table summarizes the key aggregation pipeline operators (https://docs.mongodb.com/manual/meta/aggregation-quick-reference/#operator-expressions) that are currently available:
| Arithmetic | This set currently consists of 15 basic operators, which let you perform arithmetic operations including $add, $subtract, $multiply, and so on. |
| Array |
These operators are needed when a document contains an array property. Notable operators in this set include:
|
| Boolean | Used to formulate complex conditions. These include $and, $or, and $not. |
| Comparison ... |
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