ArangoDB Aggregation Query

ArangoDB is a multi-model database that supports document, graphic, and key value storage. It provides a powerful set of aggregation query functions to process and analyze data stored in the database. Here are some aggregation queries supported by ArangoDB and their implementation examples: 1. COUNT: Used to calculate the number of documents in a specified set. Example: sql db.collection.count() 2. SUM: Sums the numeric fields in a set. Example: sql db.collection.sum("fieldName") 3. AVG: Averages the numerical fields in a set. Example: sql db.collection.average("fieldName") 4. MIN: Find the minimum value for the fields in the set. Example: sql db.collection.min("fieldName") 5. MAX: Find the maximum value for the fields in the set. Example: sql db.collection.max("fieldName") 6. GROUP BY: Groups sets by one or more fields and applies aggregation functions to each group. Example: sql FOR doc IN collection COLLECT groupField = doc.field1 AGGREGATE sumField = SUM(doc.field2) RETURN {group: groupField, sum: sumField} 7. SORT: Sorts the set according to the specified fields. Example: sql FOR doc IN collection SORT doc.fieldName ASC RETURN doc 8. Limit: Limits the number of result sets. Example: sql FOR doc IN collection LIMIT 10 RETURN doc In these examples, "collection" represents the name of the table or collection, and "fieldName" represents the name of the field. They can be replaced according to the actual situation to achieve corresponding aggregation queries. Please note that before executing aggregation queries, it is necessary to create appropriate table structures and add sample data based on business requirements.