[英]How to calculate average using aggregated values in elasticsearch?
[英]elasticsearch calculate average of unique values
如何動態計算elasticsearch中唯一值的平均值?
{ "price" : 10000, "color" : "red" }
{ "price" : 20000, "color" : "red" }
{ "price" : 30000, "color" : "green" }
{ "price" : 15000, "color" : "blue" }
{ "price" : 12000, "color" : "green" }
{ "price" : 20000, "color" : "red" }
{ "price" : 80000, "color" : "red" }
{ "price" : 25000, "color" : "blue" }
在上面的數據中,我如何獲得“顏色”字段的唯一值,然后獲得每個獨特“顏色”字段的平均值?
使用Aggregration,您可以得到答案:
curl -XGET 'localhost:9200/demo/post/_search?pretty=true' -d
'{
"aggs": {
"aggs_color": {
"terms": {
"field": "color"
},
"aggs": {
"aggs_avg": {
"avg": {
"field": "price"
}
}
}
}
}
}
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