elasticsearch - How to aggregate by substring in elasticseach -


i have index many document this:

post /example/doc {  id : "type-name",  foo: bar }

and retrieve list of type present. example

 post /example/doc  {      id : "aaa-123",      foo: bar  }  post /example/doc  {      id : "aaa-456",      foo: bar  }  post /example/doc  {      id : "bbb-123",      foo: bar  }

and ask elasticseaarch give me list have aaa , bbb.

update i've solved using custom analyzer

"settings": {          "analysis": {             "char_filter" : {                 "remove_after_minus":{                     "type":"pattern_replace",                     "pattern":"-(.*)",                     "replacement":""                 }             },             "analyzer": {                 "id_analyzer":{                      "tokenizer" : "standard",                     "char_filter" : ["remove_after_minus"]                 }             }         }     }

if keep standard analyzer, id split @ "-". so, if types lower , upper case same, can go simple facet query

curl -xpost  "http://localhost:9023/index/type/_search?size=0&pretty=true" -d '{     "query" : {         { "regexp":{ "id": "[a-z]+" }     },    "facets" : {        "id" : {            "terms" : {                "field" : "id",                "size" : 50             }         }     } }'

should give somtehing can use.


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