Aerospike Aggregation Query

Aerospike is a high-performance distributed key value database, rather than a traditional relational database system, so its aggregation query function is relatively limited. The aggregation queries supported by Aerospike include Count, Sum, Min, and Max. Table structure and sample data: To demonstrate the functionality of aggregate queries, we take a table that stores movie information as an example. The table is named 'movies' and contains the following columns: -ID: Unique identifier of the movie, type is integer -Title: The title of the movie, with the type being string -Release_ Date: The release date of the movie, with a type of date -Rating: film rating, which is a Floating-point arithmetic number The example data is as follows: Id | title | release_ Date | rating -------------------------------------------------------- 1 | The Shawshank Redemption | 1994-10-14 | 9.3 2 | The Godfather | 1972-03-24 | 9.2 3 | The Dark Knight | 2008-07-18 | 9.0 4 | Pull Fiction | 1994-10-14 | 8.9 5 | Fit Club | 1999-10-15 | 8.8 The following is an example of using Aerospike for different aggregation queries: 1. Count query: Calculate the number of records in the table. sql SELECT COUNT(*) FROM movies Expected results: 5 2. Sum query: Calculate the sum of numerical values for a specified column. sql SELECT SUM(rating) FROM movies Expected result: the cumulative sum of total scores, i.e. 46.2 3. Min query: Find the minimum value of the specified column. sql SELECT MIN(rating) FROM movies Expected result: 8.8 4. Max Query: Find the maximum value of the specified column. sql SELECT MAX(rating) FROM movies Expected result: 9.3 It should be noted that Aerospike does not support more complex aggregate query operations such as average, grouping, sorting, etc. It is mainly used for high-performance key value storage and simple aggregation calculations. For more complex query requirements, it may be necessary to consider combining them with other tools and technologies.