Update all documents of Elastic Search using existing column value

问题

I have a field "published_date" in elastic search and there I have full date like yyyy-MM-dd'T'HH:mm:ss.

I want to create 3 more columns for year, month and date where I have to use the existing published_date to update new 3 columns.

Is there any inbuilt api to do this kind of work in e.s.? I am using elasticsearch 5.

回答1:

You can use the update-by-query API in order to do this. It would simply boil down to running something like this:

POST your_index/_update_by_query
{
  "script": {
    "inline": "ctx._source.year = ctx._source.published_date.date.getYear(); ctx._source.month = ctx._source.published_date.date.getMonthOfYear(); ctx._source.day = ctx._source.published_date.date.getDayOfYear(); ",
    "lang": "groovy"
  },
  "query": {
    "match_all": {}
  }
}

Also note that you need to enable dynamic scripting in order for this to work.

来源：https://stackoverflow.com/questions/41867756/update-all-documents-of-elastic-search-using-existing-column-value