I have multiple indices. I would like to execute search against them, and first of all:
- Group by index
- Sort results in the scope of the index by score.
I'm wondering if the better idea is to send one query per index or to execute multi-index query. I'm not sure if it is even possible to get what I want using the latter one.
A single multi-index query is definitely possible. Use
_index to use the index name as the primary sort criterion, and use
_score to sort on score within each index:
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