不爲也 比不能也

The multi_match query provides a convenient shorthand way of running the same query against multiple fields.multi_match query는, 여러 field에 동일한 query를 실행하는, 아주 편리한 query이다.There are several types of multi_match query, three of which just happen to coincide with the three scenarios that we listed in Know Your Data: best_fields, most_fields, and cross_fields.multi_match query는 여러 가지 형태가 있다. Know You..

The custom _all approach is a good solution, as long as you thought about setting it up before you indexed your documents. However, Elasticsearch also provides a search-time solution to the problem: the multi_match query with type cross_fields. The cross_fields type takes a term-centric approach, quite different from the field-centric approach taken by best_fields and most_fields. It treats all ..