RDoc-3343 Vector search: Querying multiple vector fields #2043
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Lwiel
approved these changes
May 23, 2025
ayende
reviewed
May 23, 2025
| {CODE-TAB:csharp:RawQuery_async vs_28_async@AiIntegration\VectorSearch\VectorSearchUsingDynamicQuery.cs /} | ||
| {CODE-TAB-BLOCK:sql:RQL} | ||
| from "Companies" | ||
| where |
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An important aspect here is that vector.search() will only return a set amount of results (by default - IIRC, is 16.
We evaluate each clause independently, so you may have this:
vector.search(embedding.text(Name), $searchTerm1, 0.78)
and
vector.search(embedding.text(Address.Country), $searchTerm2, 0.82)
Where the first clause gives [1,2,3...16] results and the second gives [18,... 34]` results. And there won't be a match between them.
However, if we will continue deeper in the first clause, we'll get to 18 which would be a match.
The problem is that we must run the HNSW on each vector independently, and the size matters a lot.
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Related issue:
https://issues.hibernatingrhinos.com/issue/RDoc-3343/Vector-search-Querying-multiple-vector-fields