The following are some of the important queries showing off Query DSL:

• match_all: Matches all the documents. The default query that runs when nothing is specified. This can be used in conjunction with filter and returns all the documents satisfying the filter condition.

{
     “match_all”: {}
}

• match: Used when you need full text or exact match on any of the fields in the document:

{
     “match”: {
         “field_name”: “phrase_which_has_to_be_searched”
     }
}

• multi_match: Can be used to match multiple fields in a document. It is like executing multiple match queries:

{
     “multi_match”: {
         “query”: “phrase_which_has_to_be_searched”,
         “fields”: [ “field1”, “field2” ]
     }
}

• range: Used for numbers or date fields that fall in between a particular specified value:

{
     "range": {
         "field_name": {
             "<gt or gte>":  5,
             "<lt or lte>":   50
         }
     }
 }

• term: Used for an exact value search:

{
     “term”: {
          “field_name”: “search_text”  
     }
}

• terms: The same as a term query but allows us to enter multiple search texts, which can be searched on:

{
     “terms”: {
          “field_name”: [ “search_text1”, “search_text2”, “search_text3” ]
     }
}