以下是我的文档结构
'Order': {
u'properties': {
u'order_id': {u'type': u'integer'},
'Product': {
u'properties': {
u'product_id': {u'type': u'integer'},
u'product_category': {'type': 'text'},
},
u'type': u'nested'
}
}
}
文档1
"Order": {
"order_id": "1",
"Product": [
{
"product_id": "1",
"product_category": "category_1"
},
{
"product_id": "2",
"product_category": "category_2"
},
{
"product_id": "3",
"product_category": "category_2"
},
]
}
文档2
"Order": {
"order_id": "2",
"Product": [
{
"product_id": "4",
"product_category": "category_1"
},
{
"product_id": "1",
"product_category": "category_1"
},
{
"product_id": "2",
"product_category": "category_2"
},
]
}
我想获得以下输出
"aggregations": {
"Order": [
{
"order_id": "1"
"category_counts": [
{
"category_1": 1
},
{
"category_2": 2
},
]
},
{
"order_id": "1"
"category_counts": [
{
"category_1": 2
},
{
"category_2": 1
},
]
},
]
}
我尝试使用嵌套聚合
"aggs": {
"Product-nested": {
"nested": {
"path": "Product"
}
"aggs": {
"category_counts": {
"terms": {
"field": "Product.product_category"
}
}
},
}
}
它不为每个订单提供输出,但为所有订单提供组合输出
{
"Product-nested": {
"category_counts": [
"category_1": 3,
"category_2": 3
]
}
}
我有两个问题:
我使用的是elasticsearch> = 5.0
答案 0 :(得分:0)
我有一个想法,但我不认为它是最好的..
您可以在“order_id”字段上进行术语聚合,然后在“Product.product_category”上进行子nestes聚合。
这样的事情:
{
“aggs”:{
"all-order-id": {
"terms": {
"field": "order_id",
"size": 10
},
"aggs": {
"Product-nested": {
"nested": {
"path": "Product"
},
"aggs": {
"all-products-in-order-id": {
"terms": {
"field": "Product.product_category"
}
}
}
}
}
}
} }
抱歉它的锁定位置凌乱,我对这个答案编辑器不太好。