T-SQL查询按产品和方案计算总和

Question

我有一个包含以下结构的表

createdata: function(event){
            var newModel = new App.Models.Quiz({ 
                name:$("#name").val(), 
                surname:$("#surname").val(), 
                age:$("#age").val()});

            newModel.save({wait:true},{
                success: function (model, response) {
                        $("#blanket").hide();
                        $("#create_popup").hide();
                    },
                    error: function (model, response) {
                        alert(response.responseText);
                    },      
                });
            this.personCollection.add(newModel);
            console.log(this.quizCollection.toJSON());
        },

我需要编写一个获取结果

的查询

id | productCode | schemeCode | balance
1  |2            | 1          | 200
2  |2            | 1          | 150
3  |2            | 2          | 70
4  |3            | 1          | 70
5  |3            | 2          | 100
6  |4            | 3          | 200  

数据的格式基于productCode和SchemeCode。

Answer 1

select productCode, schemeCode, count(1) as [Count], sum(balance) as Total
  from table_name
  group by productCode, schemeCode