Elasticsearch date query. People who were born in a certain month

问题

I have a field with the following mapping:

birthdate: { type: :date, format: :dateOptionalTime }

1. I need to find everyone who were born in month of May (including all years)
2. Another query is to find all people who were born on 'August 25' (including all years)

What would be the query for that?

回答1:

You can achieve this with a script filter

All people born in May of any year:

{
  "query": {
    "filtered": {
      "filter": {
        "script": {
          "script": "doc.birthdate.date.monthOfYear == 5"
        }
      }
    }
  }
}

All people born on August 25th (any year)

{
  "query": {
    "filtered": {
      "filter": {
        "script": {
          "script": "doc.birthdate.date.monthOfYear == 8 && doc.birthdate.date.dayOfMonth == 25"
        }
      }
    }
  }
}

回答2:

GET index_name/doc_type/_search
{
    "query": {
        "bool" : {
            "filter" : {
                "script" : {
                    "script" : {
                        "source": "doc.field_name.date.getMonthOfYear() == month_number",
                        "lang": "painless"
                     }
                }
            }
        }
    }
}

回答3:

Just for the archives, ES 7 brought some braking changes https://www.elastic.co/guide/en/elasticsearch//reference/current/breaking-changes-7.0.html#_getdate_and_getdates_removed

It is now:

POST /people/_search?size=50
{
  "query": {
    "bool" : {
      "filter" : {
       "script" : {
          "script" : {
            "source": "doc['jour'].value.getMonthValue() == 5",
            "lang": "painless"
          }
        }
      }
    }
  }
}

回答4:

First question:

POST /test_index/_search
{
   "query": {
      "filtered": {
         "filter": {
            "range": {
               "birthdate": {
                  "gte": "2015-05-01",
                  "lt": "2015-06-01"
               }
            }
         }
      }
   }
}

Second question:

POST /test_index/_search
{
   "query": {
      "filtered": {
         "filter": {
            "range": {
               "birthdate": {
                  "gte": "2015-08-25",
                  "lte": "2015-08-25"
               }
            }
         }
      }
   }
}

Here's the code I used to test it:

http://sense.qbox.io/gist/36c800cabbe4143ecf72144d02e58e267c1e761a

来源：https://stackoverflow.com/questions/32640437/elasticsearch-date-query-people-who-were-born-in-a-certain-month