Can graphql return aggregate counts?

Question

Graphql is great and I\'ve started using it in my app. I have a page that displays summary information and I need graphql to return aggregate counts? Can this be done?

Answer 1

You should define a Type of aggregated data in Graphql and a function you want to implement it. For example, if you want to write the following query:

SELECT age, sum(score) from student group by age;

You should define the data type that you want to return:

 type StudentScoreByAge{
      age: Int
      sumOfScore: Float
    }

and a Graphql function:

 getStudentScoreByAge : [StudentScoreByAge]
    async function(){
        const res = await client.query("SELECT age, sum(score) as sumOfScore 
                                        from Student group by age");
        return res.rows;
    }