xethorn

Elasticsearch: Min and Max Children Query with Nested Datatypes

Elasticsearch does not support min_children and max_children for nested datatypes by default (see: issue #10043). In case you need this behavior, this gist provides an alternative solution. Please note that I haven't benchmarked it against join queries.

Alternative solution

To support min_children and max_children for your nested query, all you have to do is to use a function_score query. To make this more concrete: you have an index called Person with the following mapping:

• first_name (text)
• email (text)