Key Takeaways About $concat Operator
- The $concat operator in MongoDB is used to concatenate two or more strings into a single string.
- It is a powerful tool for string manipulation in MongoDB.
- It can be used with the $project stage of the aggregation pipeline to add a new field to the documents with the concatenated string.
- The $concat operator can be used with other aggregation operators, such as $trim, to further manipulate the strings.
MongoDB – $concat Operator
MongoDB $concat or concatenation operator concatenates two or more strings and returns a single string. The $concat operator is one of the string expression operators that is used in the aggregation pipeline stages.
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