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Substring support for similarity_search_with_score (#10746)

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**Description:** Possible to filter with substrings in
similarity_search_with_score, for example: filter={'user_id':
{'substring': 'user'}}

---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
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mateai 2023-09-20 06:32:44 +03:00 committed by GitHub
parent 740eafe41d
commit 900dbd1cbe
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7
libs/langchain/langchain/vectorstores/pgembedding.py
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@ -360,6 +360,13 @@ class PGEmbedding(VectorStore):
value_case_insensitive[IN]
)
filter_clauses.append(filter_by_metadata)
elif isinstance(value, dict) and "substring" in map(
str.lower, value
):
filter_by_metadata = EmbeddingStore.cmetadata[key].astext.ilike(
f"%{value['substring']}%"
)
filter_clauses.append(filter_by_metadata)
else:
filter_by_metadata = EmbeddingStore.cmetadata[
key