使用elasticsearch进行范围查询，将日期保存为“text”类型

Question

I want to search for documents falls on a given date range but the range query doesn't return any result.

Field mapping: TestDate
type "text" fields
keyword type "keyword" ignore_above 256

I have tried this "range": {"TestDate": {"gte": "2015-01-01","lte":"2015-02-01"}}

I want all the documents satisfying the above condition.

Answer 1

You need to map the field as a date instead, otherwise it won't work being mapped as text

{
   ...
   "TestDate": {
     "type": "date"
   }
   ...
}

Only then your range query will work:

{
  "query": {
    "range": {
      "TestDate": {
        "gte": "2015-01-01",
        "lte":"2015-02-01"
      }
    }
  }
}