Find Correlation between fields in different indices

Using Elasticsearch version 7.14.0, I want to find correlations betweet fields in different indices.

An index named "A" has "name", "a-1", "a-2" fields.
An index named "B" has "name", "b-1", "b-2" fields.

The "name" field is the common field for index "A" and "B".

What I want to do is to find the correlation between "a-1" and "b-1" (or "a-2" and "b-2").
Is there any way to find the correlation?

Welcome to our community! :smiley:

If the fields are the same in each index, then you can run queries across them both using the same search values.

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