14.記錄------_all欄位和date欄位查詢

官文上介紹了_all查詢和date欄位查詢的不同,自己實踐進行了解.

首先head顯示,兩個索引的結果顯示.

例項查詢

引數:_search?q=2018

curl -XGET  http://172.16.150.149:29200/twitter,facebook/_search?q=2018

{"took":1,"timed_out":false,"_shards":
   	{"total":4,"successful":4,"failed":0},
"hits":
   {"total":6,"max_score":0.4375,"hits":   
   [{"_index":"twitter","_type":"big","_id":"777","_score":0.4375,"_source":{"title":"bigweb","text":"nothing","d":"2018/10/18"}},
	{"_index":"twitter","_type":"blog","_id":"777","_score":0.4375,"_source":{"title":"bigweb","text":"nothing","d":"2018/10/18"}},
	...
 

直接用q=2018是屬於_all欄位查詢(參考官文)

hits-totle:6顯示完全.

引數:_search?q=date:2018

curl -XGET  http://172.16.150.149:29200/twitter,facebook/_search?q=date:2018

{"took":1,"timed_out":false,"_shards":{"total":4,"successful":4,"failed":0},"hits":{"total":4,"max_score":0.625,"hits":
[{"_index":"facebook","_type":"blog","_id":"AWZ67I_dHFL4sAFl7IMJ","_score":0.625,"_source":{"title":"website","text":"blog is making","date":"2018/1016"}},
{"_index":"facebook","_type":"blog","_id":"pretty","_score":0.37158427,"_source":{"title":"website","text":"blog is making","date":"2018/1016"}},
...
 

hits-totle:4顯示部分.

開始以為date引數問題,重新測試_search?q=d:2018(因為也存在d欄位)

 curl -XGET  http://172.16.150.149:29200/twitter,facebook/_search?q=d:2018
 
{"took":1,"timed_out":false,"_shards":{"total":4,"successful":4,"failed":0},"hits":{"total":0,"max_score":null,"hits":[]}}

hits-totle:4且沒有顯示詳情了.

看來這個引數不是預設查詢的欄位.

如果輸入新的欄位型別就動態對映猜測欄位型別.

es的搜尋邏輯是分析再inverse index,有空繼續研究.