August 2019
Intermediate to advanced
560 pages
13h 41m
English
Content preview from Advanced Elasticsearch 7.0
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The _name parameter
The _name parameter gives you a way to name your queries so that you can use the name of the query as an identifier in the hit. In the following example, the _name parameter seems to only make sense for the bool query that allows the partial matching of queries, such as a should clause.
Let's look at an example of finding the description field containing the keyword Asia, USA, or Europe. However, we want to report matching keywords in the hit. Okay! We can issue a bool query with a should clause, where each query is named for a region. In the following screenshot, you can see the matched_queries field in the response body to report the queries to which the hit corresponds:
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.