elasticsearch - Range query for a keyword or a date type field? -


i have field store insert time,such 2016-10-10 11:00:00.000,i tried keyword type , date type,they meet range requirements,such 

{     "query": {         "range" : {             "time" : {                 "gte" : "2016-10-10 11:00:00.000",                 "lte" : "2016-10-10 12:00:00.000"             }         }     } }

keyword , date type better?

in case, since you're storing dates, it's more appropriate use date data type, indeed. internally, dates stored long timestamps , range query run on them, have numerical range.

keyword intended used string data. if store dates keyword, dates stored unanalyzed strings , range query run on them consider them lexical range.

if ever need create date_histogram aggregation out of dates, keyword type won't it. should prefer date data type.


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