ES 6.7 一些有趣的语句

1、判断 date 类型是不是 null 值，不是 null 值的加 1 天/月年

curl -XGET "vqa132:19200/script_common/_search?&size=0&pretty" -H 'Content-Type: application/json' -d'
{
  "aggs": {
    "agg_name": {
      "date_histogram": {
        "script": {
          "lang": "painless",
          "source": "if (doc[\u0027class\u0027].size()==0){return params.date}else {return doc[\u0027birthday\u0027].value.plusDays(1)}",
          "params": {
            "date" : 2208960000000
          }
        },
        "interval": "year",
        "min_doc_count": 1
      }
    }
  }
}
';