elasticsearch系列-ES對多個欄位聚合，select A,B,COUNT(*) from table group by A,B
阿新 • • 發佈：2019-01-24
ES對多個欄位聚合，select A,B,COUNT(*)from table group by A,B
假設有下表
NAME SEX PROF
李誠 男 副教授
張旭 男 講師
王萍 女 助教
劉冰 女 助教
要查詢select SEX,PROF,COUNT(*) from table group by SEX,PROF
1、正確的答案：
修改elasticsearch.yml配置檔案，新增下面兩個配置，重啟es叢集
script.engine.groovy.inline.aggs: on
script.engine.groovy.inline.search: on
2、錯誤的答案：
JavaAPI Script script = new Script(ScriptType.INLINE, "groovy", "doc['SEX.keyword'].value+'-split-'+doc['PROF.keyword'].value", new HashMap<String, Object>()); TermsAggregationBuilder callTypeTeamAgg =AggregationBuilders.terms("sexprof").script(script); 這樣得到的sex,prof兩列是一起返回的，中間通過"-split-"分開，拿到結果後自行處理,結果大概像下面的（省略了沒用的資訊）：{ "size": 0, "query": { "match_all": {} }, "aggs": { "sexprof": { "terms": { "script": { "inline": "doc['SEX.keyword'].value +'-split-'+ doc['PROF.keyword'].value " } } } } }
{ "aggregations": { "sexprof": { "doc_count_error_upper_bound": 5, "sum_other_doc_count": 379, "buckets": [ { "key": "女-split-助教", "doc_count": 2 }, { "key": "男-split-講師", "doc_count": 1 }, { "key": "男-split-教授", "doc_count": 1 } ] } } }
2、錯誤的答案：
{
"query": {
"match_all": {}
},
"aggs": {
"sex": {
"terms": {
"field": "SEX.keyword"
}
},
"prof": {
"terms": {
"field": "PROF.keyword'"
}
}
}
}{
"aggregations": {
"sex": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "女",
"doc_count": 2
},
{
"key": "男",
"doc_count": 2
}
]
},
"prof": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "副教授",
"doc_count": 1
},
{
"key": "講師",
"doc_count": 1
},
{
"key": "助教",
"doc_count": 1
}
]
}
}
}