Is it possible to compare two fields from different types on a Query DSL?

问题

I'm new to ElasticSearch and I'm struggling with this question. Basically what I want to do is sort of like this (SQL Example):

SELECT A.id
FROM TableA A, TableB B
WHERE A.id = B.id;

I want a Query that returns all of the info from TableA, but only if the id from TableA is equal to an id from TableB. I've read a lot of Query Filter fields and I think I might use the Term Field but I'm not sure how.

Thanks in advance!

回答1:

This answer was given by Adrien Grand on a ElasticSearch group:

This SQL query is a join and in general elasticsearch does not support joins.

If the id field is your PK, you might be able to do it by indexing B as a child of A (using parent/child) and then searching for all documents in A that have a child in B.

来源：https://stackoverflow.com/questions/29799207/is-it-possible-to-compare-two-fields-from-different-types-on-a-query-dsl