#Index Alias 经测试，可以对不同的索引起相同的别名
DELETE /titles
DELETE /titles2
PUT /titles
{
  "mappings": {
    "properties": {
      "title": {
        "type": "text",
        "analyzer": "english",
        "fields": {"std": {"type": "text","analyzer": "standard"}}
      }
    }
  }
}
PUT /titles2
{
  "mappings": {
    "properties": {
      "title": {
        "type": "text",
        "analyzer": "english",
        "fields": {"std": {"type": "text","analyzer": "standard"}}
      }
    }
  }
}
POST titles/_bulk
{ "index": { "_id": 1 }}
{ "title": "My dog barks" }
{ "index": { "_id": 2 }}
{ "title": "I see a lot of barking dogs on the road " }
POST titles2/_bulk
{ "index": { "_id": 3 }}
{ "title": "My dog barks" }
{ "index": { "_id": 4 }}
{ "title": "I see a lot of barking dogs on the road " }
POST _aliases
{
  "actions": [
    {
      "add": {
        "index": "titles",
        "alias": "aliastitle"
      }
    }
  ]
}
POST _aliases
{
  "actions": [
    {
      "add": {
        "index": "titles2",
        "alias": "aliastitle"
      }
    }
  ]
}
GET /aliastitle/_search
{
   "query": {
        "multi_match": {
            "query": "barking dogs",
            "type": "most_fields",
            "fields": [ "title", "title.std" ]
        }
    }
}
GET /aliastitle/_search
{
   "query": {
        "multi_match": {
            "query": "barking dogs",
            "type": "most_fields",
            "fields": [ "title^10", "title.std" ]
        }
    }
}