转：Elasticsearch删除数据之_delete_by_query

 地址:https://yq.aliyun.com/articles/633438

es参考版本：elasticsearch：5.5
_delete_by_query会删除所有query语句匹配上的文档，用法如下：

curl -X POST "localhost:9200/twitter/_delete_by_query" -H 'Content-Type: application/json' -d'
{
  "query": { 
    "match": {
      "name": "测试删除"
    }
  }
}
'

查询必须是有效的键值对，query是键，这和Search API是同样的方式。在search api中q参数和上面效果是一样的。

返回数据格式，告诉你用时和删除多少数据等

{
  "took" : 147,
  "timed_out": false,
  "deleted": 119,
  "batches": 1,
  "version_conflicts": 0,
  "noops": 0,
  "retries": {
    "bulk": 0,
    "search": 0
  },
  "throttled_millis": 0,
  "requests_per_second": -1.0,
  "throttled_until_millis": 0,
  "total": 119,
  "failures" : [ ]
}