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--- title: "聚合函数" date: "2022-01-30T10:22:54.000Z" permalink: "/pages/function/aggregation/" --- # count * 入参:target:Object * 返回值:int * 函数说明:计算集合大小 var list = [1,2,3,4,5] return count(list); // 5 # sum * 入参:target:Object * 返回值:Number * 函数说明:对集合进行求和 var list = [1,2,3,4,5] return sum(list); // 15 # max * 入参:target:Object * 返回值:Object * 函数说明:求集合最大值 var list = [1,2,3,4,5] return max(list); // 5 # min * 入参:target:Object * 返回值:Object * 函数说明:求集合最小值 var list = [1,2,3,4,5] return min(list); // 5 # avg * 入参:target:Object * 返回值:Object * 函数说明:求集合平均值 var list = [1,2,3,4,5] return min(list); // 3 # group_concat * 入参:target:Object * 入参:separator:String 分隔符,可省略 * 返回值:Object * 函数说明:将集合拼接起来 var list = [1,2,3,4,5] return group_concat(list); // "1,2,3,4,5" // return group_concat(list,'|'); // "1|2|3|4|5"

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