纵向分组小计

一、定义：

仅限于组合动态列分组中用于动态属性的纵向小计，且纵向分组至少有两列。

二、示例

1.创建数据集test

{
  "data": [{
		"region": "华东", "sales": 1000, "gifts": 100, "month": "1月", "province": "安徽", "city": "合肥"
	},{
		"region": "华东", "sales": 1000, "gifts": 100, "month": "1月", "province": "安徽", "city": "安庆"
	},{
		"region": "华东", "sales": 1000, "gifts": 100, "month": "2月", "province": "安徽", "city": "安庆"
	},{
		"region": "华东", "sales": 1000, "gifts": 100, "month": "2月", "province": "安徽", "city": "合肥"
	},{
		"region": "华北", "sales": 1000, "gifts": 100, "month": "1月", "province": "河北", "city": "邯郸"
	},{
		"region": "华北", "sales": 1000, "gifts": 100, "month": "2月", "province": "河北", "city": "邯郸"
	},{
		"region": "华南", "sales": 2000, "gifts": 200, "month": "2月", "province": "广东", "city": "广州"
	},{
		"region": "华南", "sales": 3000, "gifts": 300, "month": "1月", "province": "广东", "city": "广州"
	},{
		"region": "华南", "sales": 5000, "gifts": 600, "month": "1月", "province": "广东", "city": "深圳"
	},{
		"region": "华南", "sales": 6000, "gifts": 600, "month": "2月", "province": "广东", "city": "深圳"
	},{
		"region": "华北", "sales": 7000, "gifts": 600, "month": "2月", "province": "河北", "city": "唐山"
	},{
		"region": "华北", "sales": 7000, "gifts": 600, "month": "1月", "province": "河北", "city": "唐山"
	},{
		"region": "华南", "sales": 2000, "gifts": 200, "month": "2月", "province": "广西", "city": "南宁"
	},{
		"region": "华南", "sales": 3000, "gifts": 300, "month": "1月", "province": "广西", "city": "南宁"
	},{
		"region": "华南", "sales": 5000, "gifts": 600, "month": "1月", "province": "广西", "city": "桂林"
	},{
		"region": "华南", "sales": 6000, "gifts": 600, "month": "2月", "province": "广西", "city": "桂林"
	}]
}