How to check if a the particular element of an array field exists in elasticsearch? -


this sample document index

{     "name": "sandy",     "age": "25",     "ug":["b.tech"],     "pg":["ms","phd"] }

i want filter candidates on basis of pg qualifications. want 2 types of filters.

  1. in cases pg field empty. so,i need filter out ones have pg qualifications.

  2. i want candidates pg qualification "ms". not others "mba" , all. given first element under "pg" array. how can implement in elasticsearch?

considering information provided, suggest follows.

  1. for first question, try using exists filter filtering records containing atleast 1 pg value in array.

    { "query": { "constant_score": { "exists": { "field": "pg" } } } }

  2. for second question, considering fact result can contain other elements along ms in array shown below.

    { "query": { "bool": { "must": [ { "term": { "additionalskill": "java" } }, { "constant_score": { "filter": { "exists": { "field": "additionalskill" } } } } ] } } }

  3. if use case dint allow other elements other ms in array have limit result records using scripting feature in elasticsearch.


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